diff --git a/service/main.go b/service/main.go
index de0a94ca..63713348 100644
--- a/service/main.go
+++ b/service/main.go
@@ -29,6 +29,7 @@ import (
 	"github.com/movsb/taoblog/service/modules/comment_notify"
 	"github.com/movsb/taoblog/service/modules/renderers/exif"
 	"github.com/movsb/taoblog/service/modules/renderers/friends"
+	"github.com/movsb/taoblog/service/modules/renderers/reminders"
 	"github.com/movsb/taoblog/service/modules/search"
 	theme_fs "github.com/movsb/taoblog/theme/modules/fs"
 	"github.com/movsb/taorm"
@@ -87,6 +88,8 @@ type Service struct {
 	exifTask *exif.Task
 	// 朋友头像数据缓存任务
 	friendsTask *friends.Task
+	// 提醒事项任务
+	remindersTask *reminders.Task
 
 	// 文章内容缓存。
 	// NOTE：缓存 Key 是跟文章编号和内容选项相关的（因为内容选项不同内容也就不同），
@@ -231,6 +234,11 @@ func newService(ctx context.Context, cancel context.CancelFunc, cfg *config.Conf
 		s.updatePostMetadataTime(int64(postID), time.Now())
 	})
 
+	s.remindersTask = reminders.NewTask(s.GetPluginStorage(`reminders`), func(pid int64) {
+		s.deletePostContentCacheFor(pid)
+		s.updatePostMetadataTime(pid, time.Now())
+	})
+
 	s.certDaysLeft.Store(-1)
 	s.domainExpirationDaysLeft.Store(-1)
 	s.exporter = _NewExporter(s)
diff --git a/service/modules/renderers/highlight/highlight.go b/service/modules/renderers/highlight/highlight.go
index 36faba01..cf3228e0 100644
--- a/service/modules/renderers/highlight/highlight.go
+++ b/service/modules/renderers/highlight/highlight.go
@@ -14,9 +14,9 @@ import (
 	"github.com/yuin/goldmark/util"
 )
 
-//go:generate sass --style compressed style.scss style.css
+//go:generate sass --no-source-map --style compressed style.scss style.css
 
-//go:embed style.css style.css.map script.js
+//go:embed style.css script.js
 var _root embed.FS
 
 func init() {
diff --git a/service/modules/renderers/reminders/README.md b/service/modules/renderers/reminders/README.md
new file mode 100644
index 00000000..edbd70b9
--- /dev/null
+++ b/service/modules/renderers/reminders/README.md
@@ -0,0 +1,12 @@
+# 提醒事项
+
+主要用于长期的提醒事项备忘📝；例如：生日、纪念日。
+
+## 格式
+
+```reminder
+title: 纪念日！
+description: 详细的描述。
+dates:
+  start: 2014-12-24
+```
diff --git a/service/modules/renderers/reminders/reminder.go b/service/modules/renderers/reminders/reminder.go
new file mode 100644
index 00000000..16966ffe
--- /dev/null
+++ b/service/modules/renderers/reminders/reminder.go
@@ -0,0 +1,171 @@
+package reminders
+
+import (
+	"bytes"
+	"embed"
+	"html/template"
+	"time"
+
+	"github.com/movsb/taoblog/modules/utils"
+	"github.com/movsb/taoblog/modules/utils/dir"
+	dynamic "github.com/movsb/taoblog/service/modules/renderers/_dynamic"
+	"github.com/movsb/taoblog/theme/modules/sass"
+	"github.com/yuin/goldmark"
+	"github.com/yuin/goldmark/ast"
+	"github.com/yuin/goldmark/parser"
+	"github.com/yuin/goldmark/renderer"
+	"github.com/yuin/goldmark/text"
+	"github.com/yuin/goldmark/util"
+	"gopkg.in/yaml.v2"
+)
+
+//go:generate sass --no-source-map style.scss style.css
+
+//go:embed reminder.html style.css
+var _root embed.FS
+
+func init() {
+	dynamic.RegisterInit(func() {
+		dynamic.Dynamic[`reminders`] = dynamic.Content{
+			Styles: []string{
+				string(utils.Must1(_root.ReadFile(`style.css`))),
+			},
+		}
+		sass.WatchDefaultAsync(string(dir.SourceAbsoluteDir()))
+	})
+}
+
+type Reminders struct {
+	task *Task
+	pid  int
+}
+
+func New(task *Task, pid int) *Reminders {
+	f := &Reminders{
+		task: task,
+		pid:  pid,
+	}
+
+	return f
+}
+
+type UserDate time.Time
+
+var layouts = [...]string{
+	`2006-01-02`,
+}
+
+// TODO 需要修改成服务器时间。
+var fixedZone = time.FixedZone(`fixed`, 8*60*60)
+
+func (u *UserDate) UnmarshalYAML(unmarshal func(interface{}) error) error {
+	var s string
+	if err := unmarshal(&s); err != nil {
+		return err
+	}
+	var outErr error
+	for _, layout := range layouts {
+		// TODO 需要区分 Parse 与 ParseInLocation
+		t, err := time.ParseInLocation(layout, s, fixedZone)
+		if err != nil {
+			outErr = err
+			continue
+		}
+		*u = UserDate(t)
+	}
+	return outErr
+}
+
+type Reminder struct {
+	Title       string `yaml:"title"`
+	Description string `yaml:"description"`
+	Dates       struct {
+		Start UserDate `yaml:"start"`
+	} `yaml:"dates"`
+}
+
+func (r *Reminder) Days() int {
+	return int(time.Since(time.Time(r.Dates.Start)).Hours() / 24)
+}
+
+func (r *Reminder) Start() string {
+	return time.Time(r.Dates.Start).Format(`2006-01-02`)
+}
+
+var _ interface {
+	parser.ASTTransformer
+	goldmark.Extender
+	renderer.NodeRenderer
+} = (*Reminders)(nil)
+
+var tmpl = template.Must(template.New(`reminder`).Parse(string(utils.Must1(_root.ReadFile(`reminder.html`)))))
+
+func (r *Reminders) Extend(m goldmark.Markdown) {
+	m.Parser().AddOptions(parser.WithASTTransformers(util.Prioritized(r, 100)))
+	m.Renderer().AddOptions(renderer.WithNodeRenderers(util.Prioritized(r, 100)))
+}
+
+type _ReminderRendererBlock struct {
+	ast.BaseBlock
+	ref *ast.FencedCodeBlock
+}
+
+var _reminderCodeBLockKind = ast.NewNodeKind(`reminder_code_block`)
+
+func (b *_ReminderRendererBlock) Kind() ast.NodeKind {
+	return _reminderCodeBLockKind
+}
+func (b *_ReminderRendererBlock) Dump(source []byte, level int) {
+	b.ref.Dump(source, level)
+}
+
+func (r *Reminders) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) {
+	reg.Register(_reminderCodeBLockKind, r.renderCodeBlock)
+}
+
+// Transform implements parser.ASTTransformer.
+func (r *Reminders) Transform(node *ast.Document, reader text.Reader, pc parser.Context) {
+	rCodeBlocks := []*ast.FencedCodeBlock{}
+	ast.Walk(node, func(n ast.Node, entering bool) (ast.WalkStatus, error) {
+		if entering && n.Kind() == ast.KindFencedCodeBlock {
+			cb := n.(*ast.FencedCodeBlock)
+			if cb.Info != nil {
+				info := string(cb.Info.Segment.Value(reader.Source()))
+				if info == `reminder` {
+					rCodeBlocks = append(rCodeBlocks, cb)
+				}
+			}
+		}
+		return ast.WalkContinue, nil
+	})
+	for _, cb := range rCodeBlocks {
+		cb.Parent().ReplaceChild(cb.Parent(), cb, &_ReminderRendererBlock{
+			ref: cb,
+		})
+	}
+}
+
+func (r *Reminders) renderCodeBlock(writer util.BufWriter, source []byte, n ast.Node, entering bool) (ast.WalkStatus, error) {
+	if !entering {
+		return ast.WalkContinue, nil
+	}
+
+	n = n.(*_ReminderRendererBlock).ref
+	b := bytes.NewBuffer(nil)
+	for i := 0; i < n.Lines().Len(); i++ {
+		line := n.Lines().At(i)
+		b.Write(line.Value(source))
+	}
+	y := b.Bytes()
+
+	rm := Reminder{}
+	if err := yaml.UnmarshalStrict(y, &rm); err != nil {
+		return ast.WalkStop, err
+	}
+
+	if err := tmpl.Execute(writer, &rm); err != nil {
+		return ast.WalkStop, err
+	}
+
+	return ast.WalkContinue, nil
+}
diff --git a/service/modules/renderers/reminders/reminder.html b/service/modules/renderers/reminders/reminder.html
new file mode 100644
index 00000000..3f5e7f11
--- /dev/null
+++ b/service/modules/renderers/reminders/reminder.html
@@ -0,0 +1,11 @@
+<div class="reminder">
+	<div class="title">
+		{{ .Title }}
+	</div>
+	<div class="days">
+		{{ .Days }}
+	</div>
+	<div class="start">
+		开始时间：{{ .Start }}
+	</div>
+</div>
diff --git a/service/modules/renderers/reminders/style.scss b/service/modules/renderers/reminders/style.scss
new file mode 100644
index 00000000..78d0c63a
--- /dev/null
+++ b/service/modules/renderers/reminders/style.scss
@@ -0,0 +1,19 @@
+.reminder {
+	border: 1px solid var(--border-color);
+	display: inline-block;
+	padding: .5em 1em;
+	margin: 10px;
+
+	.title {
+		font-size: 1.5em;
+		font-weight: bold;
+		border-bottom: 1px solid var(--border-color);
+		text-align: center;
+		padding: 0 2em;
+	}
+	.days {
+		font-size: 3em;
+		color: var(--accent-color);
+		text-align: center;
+	}
+}
diff --git a/service/modules/renderers/reminders/task.go b/service/modules/renderers/reminders/task.go
new file mode 100644
index 00000000..8fed6c69
--- /dev/null
+++ b/service/modules/renderers/reminders/task.go
@@ -0,0 +1,35 @@
+package reminders
+
+import (
+	"time"
+
+	"github.com/movsb/taoblog/modules/utils"
+)
+
+type Task struct {
+	invalidate func(pid int64)
+	posts      map[int64]struct{}
+}
+
+func NewTask(storage utils.PluginStorage, invalidate func(pid int64)) *Task {
+	t := &Task{
+		invalidate: invalidate,
+	}
+	go t.invalidatePosts()
+	return t
+}
+
+func (t *Task) AddReminder(pid int64) {
+	t.posts[pid] = struct{}{}
+}
+
+func (t *Task) invalidatePosts() {
+	for now := range time.Tick(time.Second) {
+		// TODO 这个时间可能不精确。比如进程挂起后？
+		if now.Hour() == 23 && now.Minute() == 59 && now.Second() == 59 {
+			for id := range t.posts {
+				t.invalidate(id)
+			}
+		}
+	}
+}
diff --git a/service/post.go b/service/post.go
index 60e4a3ad..1297c091 100644
--- a/service/post.go
+++ b/service/post.go
@@ -32,6 +32,7 @@ import (
 	katex "github.com/movsb/taoblog/service/modules/renderers/math"
 	"github.com/movsb/taoblog/service/modules/renderers/media_size"
 	"github.com/movsb/taoblog/service/modules/renderers/media_tags"
+	"github.com/movsb/taoblog/service/modules/renderers/reminders"
 	"github.com/movsb/taoblog/service/modules/renderers/rooted_path"
 	"github.com/movsb/taoblog/service/modules/renderers/scoped_css"
 	task_list "github.com/movsb/taoblog/service/modules/renderers/tasklist"
@@ -317,6 +318,7 @@ func (s *Service) renderMarkdown(secure bool, postId, commentId int64, sourceTyp
 		wikitable.New(),
 		extension.GFM,
 		extension.NewFootnote(extension.WithFootnoteBacklinkHTML(`^`)),
+		reminders.New(s.remindersTask, int(postId)),
 
 		// 所有人禁止贴无效协议的链接。
 		invalid_scheme.New(),