diff --git a/src/pages/point/PointRuleEdit.vue b/src/pages/point/PointRuleEdit.vue
index 641a455..aeb4b78 100644
--- a/src/pages/point/PointRuleEdit.vue
+++ b/src/pages/point/PointRuleEdit.vue
@@ -288,6 +288,7 @@ function createTierForm(tier?: PointRuleTier, isLast = false, valueUnit?: EventI
 	const pointValue = tier?.pointValue;
 	return {
 		key: tierKey++,
+		minText: tier?.min === undefined || tier.min === null ? "0" : formatTierBoundaryValue(tier.min, valueUnit),
 		maxText: !isLast && tier?.max !== undefined && tier.max !== null ? formatTierBoundaryValue(tier.max, valueUnit) : "",
 		pointAction: pointValue !== undefined && pointValue < 0 ? "CONSUME" : "EARN",
 		pointValueText: pointValue === undefined ? "0" : String(Math.abs(pointValue))
diff --git a/src/pages/point/component/PointRuleTierEditor.vue b/src/pages/point/component/PointRuleTierEditor.vue
index e3de174..c26f27a 100644
--- a/src/pages/point/component/PointRuleTierEditor.vue
+++ b/src/pages/point/component/PointRuleTierEditor.vue
@@ -2,7 +2,7 @@
 	<div class="tier-editor">
 		<div class="title">
 			<div v-text="`累计数值分档（${valueUnitText}）`" />
-			<div class="tips gray" v-text="`首档从 0 开始，末档不设上限；分档单位为${valueUnitText}，积分为 0 不产生流水`" />
+			<div class="tips gray" v-text="`首档起点可自定义，末档不设上限；分档单位为${valueUnitText}，积分为 0 不产生流水`" />
 		</div>
 		<div class="list">
 			<div
@@ -42,7 +42,17 @@
 	>
 		<div class="tier-editor-popup">
 			<t-form v-if="tierEditorIndex >= 0" class="form" label-align="left" label-width="10rem">
-				<t-form-item :label="`最小值（${valueUnitText}）`" content-align="right">
+				<t-form-item v-if="tierEditorIndex < 1" :label="`最小值（${valueUnitText}）`" required-mark>
+					<t-input
+						v-model.trim="tierEditorDraft.minText"
+						type="number"
+						:step="valueUnit === 'CENT' ? '0.01' : '1'"
+						align="right"
+						borderless
+						:placeholder="valueUnit === 'CENT' ? '最多两位小数' : '请输入非负整数'"
+					/>
+				</t-form-item>
+				<t-form-item v-else :label="`最小值（${valueUnitText}）`" content-align="right">
 					<span class="gray" v-text="getTierMinText(tiers, tierEditorIndex, valueUnit)" />
 				</t-form-item>
 				<t-form-item
@@ -98,6 +108,7 @@ const tierEditorVisible = ref(false);
 const tierEditorIndex = ref(-1);
 const tierEditorAdding = ref(false);
 const tierEditorDraft = reactive({
+	minText: "",
 	maxText: "",
 	pointAction: "EARN" as PointAction,
 	pointValueText: ""
@@ -139,6 +150,7 @@ function openTierEditor(index: number, adding = false): void {
 	}
 	tierEditorIndex.value = index;
 	tierEditorAdding.value = adding;
+	tierEditorDraft.minText = index < 1 ? tier.minText : "";
 	tierEditorDraft.maxText = adding ? "" : tier.maxText;
 	tierEditorDraft.pointAction = tier.pointAction === "CONSUME" ? "CONSUME" : "EARN";
 	tierEditorDraft.pointValueText = tier.pointValueText;
@@ -156,10 +168,14 @@ function confirmTierEditor(): void {
 	if (!tier) {
 		return;
 	}
-	const min = getTierMinValue(tiers.value, index, valueUnit.value);
+	const min = index < 1
+		? resolveTierBoundaryValue(tierEditorDraft.minText, valueUnit.value)
+		: getTierMinValue(tiers.value, index, valueUnit.value);
 	const pointValue = resolveNonNegativeInteger(tierEditorDraft.pointValueText);
 	if (min === undefined) {
-		Toast.warning("请先修正上一档的最大值");
+		Toast.warning(index < 1
+			? valueUnit.value === "CENT" ? "首档最小值必须是非负且最多两位小数" : "首档最小值必须是非负整数"
+			: "请先修正上一档的最大值");
 		return;
 	}
 	if (pointValue === undefined) {
@@ -177,6 +193,9 @@ function confirmTierEditor(): void {
 	} else {
 		tier.maxText = "";
 	}
+	if (index < 1) {
+		tier.minText = formatTierBoundaryValue(min, valueUnit.value);
+	}
 	tier.pointValueText = String(pointValue);
 	tier.pointAction = tierEditorDraft.pointAction;
 	if (shouldAddTier) {
@@ -209,6 +228,7 @@ function createTierForm(): PointRuleTierForm {
 	const key = tiers.value.reduce((max, tier) => Math.max(max, tier.key), -1) + 1;
 	return {
 		key,
+		minText: "0",
 		maxText: "",
 		pointAction: "EARN",
 		pointValueText: "0"
diff --git a/src/types/Point.ts b/src/types/Point.ts
index f77ef4b..b1336da 100644
--- a/src/types/Point.ts
+++ b/src/types/Point.ts
@@ -32,6 +32,7 @@ export type PointRuleTier = {
 
 export type PointRuleTierForm = {
 	key: number;
+	minText: string;
 	maxText: string;
 	pointAction: PointAction;
 	pointValueText: string;
diff --git a/src/utils/pointRule.ts b/src/utils/pointRule.ts
index 7f2b5a8..5c0729a 100644
--- a/src/utils/pointRule.ts
+++ b/src/utils/pointRule.ts
@@ -26,8 +26,8 @@ export function formatTierBoundaryValue(value: number, valueUnit?: EventValueUni
 }
 
 export function getTierMinValue(tierList: PointRuleTierForm[], index: number, valueUnit?: EventValueUnit | null): number | undefined {
-	if (index === 0) {
-		return 0;
+	if (index < 1) {
+		return resolveTierBoundaryValue(tierList[0]?.minText || "", valueUnit);
 	}
 	const previousMax = resolveTierBoundaryValue(tierList[index - 1]?.maxText || "", valueUnit);
 	if (previousMax === undefined || !Number.isSafeInteger(previousMax + 1)) {