diff --git a/optuna_dashboard/ts/components/GraphRank.tsx b/optuna_dashboard/ts/components/GraphRank.tsx
new file mode 100644
index 000000000..4e3e75449
--- /dev/null
+++ b/optuna_dashboard/ts/components/GraphRank.tsx
@@ -0,0 +1,386 @@
+import * as plotly from "plotly.js-dist-min"
+import React, { FC, useEffect, useState } from "react"
+import {
+  Grid,
+  FormControl,
+  FormLabel,
+  MenuItem,
+  Select,
+  Typography,
+  SelectChangeEvent,
+  useTheme,
+  Box,
+} from "@mui/material"
+import { plotlyDarkTemplate } from "./PlotlyDarkMode"
+import { makeHovertext } from "../graphUtil"
+import { useMergedUnionSearchSpace } from "../searchSpace"
+
+const PADDING_RATIO = 0.05
+const plotDomId = "graph-rank"
+
+interface AxisInfo {
+  name: string
+  range: [number, number]
+  isLog: boolean
+  isCat: boolean
+}
+
+interface RankPlotInfo {
+  xaxis: AxisInfo
+  yaxis: AxisInfo
+  xvalues: (string | number)[]
+  yvalues: (string | number)[]
+  zvalues: number[]
+  colors: number[]
+  hovertext: string[]
+}
+
+export const GraphRank: FC<{
+  study: StudyDetail | null
+}> = ({ study = null }) => {
+  const theme = useTheme()
+  const [objectiveId, setobjectiveId] = useState<number>(0)
+  const searchSpace = useMergedUnionSearchSpace(study?.union_search_space)
+  const [xParam, setXParam] = useState<SearchSpaceItem | null>(null)
+  const [yParam, setYParam] = useState<SearchSpaceItem | null>(null)
+  const objectiveNames: string[] = study?.objective_names || []
+
+  if (xParam === null && searchSpace.length > 0) {
+    setXParam(searchSpace[0])
+  }
+  if (yParam === null && searchSpace.length > 1) {
+    setYParam(searchSpace[1])
+  }
+
+  const handleObjectiveChange = (event: SelectChangeEvent<number>) => {
+    setobjectiveId(Number(event.target.value))
+  }
+  const handleXParamChange = (event: SelectChangeEvent<string>) => {
+    const param = searchSpace.find((item) => item.name === event.target.value)
+    setXParam(param || null)
+  }
+  const handleYParamChange = (event: SelectChangeEvent<string>) => {
+    const param = searchSpace.find((item) => item.name === event.target.value)
+    setYParam(param || null)
+  }
+
+  useEffect(() => {
+    if (study != null) {
+      const rankPlotInfo = getRankPlotInfo(study, objectiveId, xParam, yParam)
+      plotRank(rankPlotInfo, theme.palette.mode)
+    }
+  }, [study, objectiveId, xParam, yParam, theme.palette.mode])
+
+  const space: SearchSpaceItem[] = study ? study.union_search_space : []
+
+  return (
+    <Grid container direction="row">
+      <Grid
+        item
+        xs={3}
+        container
+        direction="column"
+        sx={{ paddingRight: theme.spacing(2) }}
+      >
+        <Typography
+          variant="h6"
+          sx={{ margin: "1em 0", fontWeight: theme.typography.fontWeightBold }}
+        >
+          Rank
+        </Typography>
+        {study !== null && study.directions.length !== 1 ? (
+          <FormControl component="fieldset">
+            <FormLabel component="legend">Objective:</FormLabel>
+            <Select value={objectiveId} onChange={handleObjectiveChange}>
+              {study.directions.map((d, i) => (
+                <MenuItem value={i} key={i}>
+                  {objectiveNames.length === study?.directions.length
+                    ? objectiveNames[i]
+                    : `${i}`}
+                </MenuItem>
+              ))}
+            </Select>
+          </FormControl>
+        ) : null}
+        {study !== null && space.length > 0 ? (
+          <Grid container direction="column" gap={1}>
+            <FormControl component="fieldset" fullWidth>
+              <FormLabel component="legend">x:</FormLabel>
+              <Select value={xParam?.name || ""} onChange={handleXParamChange}>
+                {space.map((d) => (
+                  <MenuItem value={d.name} key={d.name}>
+                    {d.name}
+                  </MenuItem>
+                ))}
+              </Select>
+            </FormControl>
+            <FormControl component="fieldset" fullWidth>
+              <FormLabel component="legend">y:</FormLabel>
+              <Select value={yParam?.name || ""} onChange={handleYParamChange}>
+                {space.map((d) => (
+                  <MenuItem value={d.name} key={d.name}>
+                    {d.name}
+                  </MenuItem>
+                ))}
+              </Select>
+            </FormControl>
+          </Grid>
+        ) : null}
+      </Grid>
+      <Grid item xs={9}>
+        <Box id={plotDomId} sx={{ height: "450px" }} />
+      </Grid>
+    </Grid>
+  )
+}
+
+const getRankPlotInfo = (
+  study: StudyDetail | null,
+  objectiveId: number,
+  xParam: SearchSpaceItem | null,
+  yParam: SearchSpaceItem | null
+): RankPlotInfo | null => {
+  if (study === null) {
+    return null
+  }
+
+  const trials = study.trials
+  const filteredTrials = trials.filter(filterFunc)
+  if (filteredTrials.length < 2 || xParam === null || yParam === null) {
+    return null
+  }
+
+  const xAxis = getAxisInfo(filteredTrials, xParam)
+  const yAxis = getAxisInfo(filteredTrials, yParam)
+
+  const xValues: (string | number)[] = []
+  const yValues: (string | number)[] = []
+  const zValues: number[] = []
+  const hovertext: string[] = []
+  filteredTrials.forEach((trial) => {
+    const xValue =
+      trial.params.find((p) => p.name === xAxis.name)?.param_external_value ||
+      null
+    const yValue =
+      trial.params.find((p) => p.name === yAxis.name)?.param_external_value ||
+      null
+    if (trial.values === undefined || xValue === null || yValue === null) {
+      return
+    }
+    const zValue = Number(trial.values[objectiveId])
+    xValues.push(xValue)
+    yValues.push(yValue)
+    zValues.push(zValue)
+    hovertext.push(makeHovertext(trial))
+  })
+
+  const colors = getColors(zValues)
+
+  return {
+    xaxis: xAxis,
+    yaxis: yAxis,
+    xvalues: xValues,
+    yvalues: yValues,
+    zvalues: zValues,
+    colors,
+    hovertext,
+  }
+}
+
+const filterFunc = (trial: Trial): boolean => {
+  return trial.state === "Complete" && trial.values !== undefined
+}
+
+const getAxisInfo = (trials: Trial[], param: SearchSpaceItem): AxisInfo => {
+  if (param.distribution.type === "CategoricalDistribution") {
+    return getAxisInfoForCategorical(trials, param.name, param.distribution)
+  } else {
+    return getAxisInfoForNumerical(trials, param.name, param.distribution)
+  }
+}
+
+const getAxisInfoForCategorical = (
+  trials: Trial[],
+  param: string,
+  distribution: CategoricalDistribution
+): AxisInfo => {
+  const values = trials.map(
+    (trial) =>
+      trial.params.find((p) => p.name === param)?.param_internal_value || null
+  )
+  const isDynamic = values.some((v) => v === null)
+  const span = distribution.choices.length - (isDynamic ? 2 : 1)
+  const padding = span * PADDING_RATIO
+  const min = -padding
+  const max = span + padding
+
+  return {
+    name: param,
+    range: [min, max],
+    isLog: false,
+    isCat: true,
+  }
+}
+
+const getAxisInfoForNumerical = (
+  trials: Trial[],
+  param: string,
+  distribution: FloatDistribution | IntDistribution
+): AxisInfo => {
+  const values = trials.map(
+    (trial) =>
+      trial.params.find((p) => p.name === param)?.param_internal_value || null
+  )
+  const nonNullValues: number[] = []
+  values.forEach((value) => {
+    if (value !== null) {
+      nonNullValues.push(value)
+    }
+  })
+  let min = Math.min(...nonNullValues)
+  let max = Math.max(...nonNullValues)
+  if (distribution.log) {
+    const padding = (Math.log10(max) - Math.log10(min)) * PADDING_RATIO
+    min = Math.pow(10, Math.log10(min) - padding)
+    max = Math.pow(10, Math.log10(max) + padding)
+  } else {
+    const padding = (max - min) * PADDING_RATIO
+    min = min - padding
+    max = max + padding
+  }
+
+  return {
+    name: param,
+    range: [min, max],
+    isLog: distribution.log,
+    isCat: false,
+  }
+}
+
+const getColors = (values: number[]): number[] => {
+  const rawRanks = getOrderWithSameOrderAveraging(values)
+  let colorIdxs: number[] = []
+  if (values.length > 2) {
+    colorIdxs = rawRanks.map((rank) => rank / (values.length - 1))
+  } else {
+    colorIdxs = [0.5]
+  }
+  return colorIdxs
+}
+
+const getOrderWithSameOrderAveraging = (values: number[]): number[] => {
+  const sortedValues = values.slice().sort()
+  const ranks: number[] = []
+  values.forEach((value) => {
+    const firstIndex = sortedValues.indexOf(value)
+    const lastIndex = sortedValues.lastIndexOf(value)
+    const sumOfTheValue =
+      ((firstIndex + lastIndex) * (lastIndex - firstIndex + 1)) / 2
+    const rank = sumOfTheValue / (lastIndex - firstIndex + 1)
+    ranks.push(rank)
+  })
+  return ranks
+}
+
+const plotRank = (rankPlotInfo: RankPlotInfo | null, mode: string) => {
+  if (document.getElementById(plotDomId) === null) {
+    return
+  }
+
+  if (rankPlotInfo === null) {
+    plotly.react(plotDomId, [], {
+      template: mode === "dark" ? plotlyDarkTemplate : {},
+    })
+    return
+  }
+
+  const xAxis = rankPlotInfo.xaxis
+  const yAxis = rankPlotInfo.yaxis
+  const layout: Partial<plotly.Layout> = {
+    xaxis: {
+      title: xAxis.name,
+      type: xAxis.isCat ? "category" : xAxis.isLog ? "log" : "linear",
+    },
+    yaxis: {
+      title: yAxis.name,
+      type: yAxis.isCat ? "category" : yAxis.isLog ? "log" : "linear",
+    },
+    margin: {
+      l: 50,
+      t: 0,
+      r: 50,
+      b: 50,
+    },
+    uirevision: "true",
+    template: mode === "dark" ? plotlyDarkTemplate : {},
+  }
+
+  let xValues = rankPlotInfo.xvalues
+  let yValues = rankPlotInfo.yvalues
+  if (xAxis.isCat && !yAxis.isCat) {
+    const xIndices: number[] = Array.from(Array(xValues.length).keys()).sort(
+      (a, b) =>
+        xValues[a]
+          .toString()
+          .toLowerCase()
+          .localeCompare(xValues[b].toString().toLowerCase())
+    )
+    xValues = xIndices.map((i) => xValues[i])
+    yValues = xIndices.map((i) => yValues[i])
+  }
+  if (!xAxis.isCat && yAxis.isCat) {
+    const yIndices: number[] = Array.from(Array(yValues.length).keys()).sort(
+      (a, b) =>
+        yValues[a]
+          .toString()
+          .toLowerCase()
+          .localeCompare(yValues[b].toString().toLowerCase())
+    )
+    xValues = yIndices.map((i) => xValues[i])
+    yValues = yIndices.map((i) => yValues[i])
+  }
+  if (xAxis.isCat && yAxis.isCat) {
+    const indices: number[] = Array.from(Array(xValues.length).keys()).sort(
+      (a, b) => {
+        const xComp = xValues[a]
+          .toString()
+          .toLowerCase()
+          .localeCompare(xValues[b].toString().toLowerCase())
+        if (xComp !== 0) {
+          return xComp
+        }
+        return yValues[a]
+          .toString()
+          .toLowerCase()
+          .localeCompare(yValues[b].toString().toLowerCase())
+      }
+    )
+    xValues = indices.map((i) => xValues[i])
+    yValues = indices.map((i) => yValues[i])
+  }
+
+  const plotData: Partial<plotly.PlotData>[] = [
+    {
+      type: "scatter",
+      x: xValues,
+      y: yValues,
+      marker: {
+        color: rankPlotInfo.colors,
+        colorscale: "Portland",
+        colorbar: {
+          title: "Rank",
+        },
+        size: 10,
+        line: {
+          color: "Grey",
+          width: 0.5,
+        },
+      },
+      mode: "markers",
+      showlegend: false,
+      hovertemplate: "%{hovertext}<extra></extra>",
+      hovertext: rankPlotInfo.hovertext,
+    },
+  ]
+  plotly.react(plotDomId, plotData, layout)
+}
diff --git a/optuna_dashboard/ts/components/StudyDetail.tsx b/optuna_dashboard/ts/components/StudyDetail.tsx
index 1a8ced334..663ff3993 100644
--- a/optuna_dashboard/ts/components/StudyDetail.tsx
+++ b/optuna_dashboard/ts/components/StudyDetail.tsx
@@ -27,6 +27,7 @@ import { GraphParallelCoordinate } from "./GraphParallelCoordinate"
 import { Contour } from "./GraphContour"
 import { GraphSlice } from "./GraphSlice"
 import { GraphEdf } from "./GraphEdf"
+import { GraphRank } from "./GraphRank"
 import { TrialList } from "./TrialList"
 import { StudyHistory } from "./StudyHistory"
 import { PreferentialTrials } from "./PreferentialTrials"
@@ -121,6 +122,11 @@ export const StudyDetail: FC<{
             <Contour study={studyDetail} />
           </CardContent>
         </Card>
+        <Card sx={{ margin: theme.spacing(2) }}>
+          <CardContent>
+            <GraphRank study={studyDetail} />
+          </CardContent>
+        </Card>
         <Typography variant="h5" sx={{ margin: theme.spacing(2) }}>
           Empirical Distribution of the Objective Value
         </Typography>