diff --git a/tidb-cloud/tidb-cloud-billing.md b/tidb-cloud/tidb-cloud-billing.md
index 2193a259f24c6..30b718c82ab06 100644
--- a/tidb-cloud/tidb-cloud-billing.md
+++ b/tidb-cloud/tidb-cloud-billing.md
@@ -210,6 +210,10 @@ To view the discount information, perform the following steps:
 
 ## Payment method
 
+> **Note:**
+>
+> New TiDB Cloud accounts include a free trial by default. You do not need to subscribe to an AWS Marketplace free trial or link an AWS billing account to access this trial.
+
 If you are in the `Organization Owner` or `Organization Billing Manager` role of your organization, you can manage the payment information of TiDB Cloud. Otherwise, skip this section.
 
 <CustomContent language="en,zh">
@@ -311,6 +315,10 @@ If you already have a TiDB Cloud account and you want to pay for the usage via y
 <SimpleTab>
 <div label="AWS Marketplace">
 
+> **Note:**
+>
+> Subscribing to a free trial through AWS Marketplace requires creating a new TiDB Cloud account; the trial subscription cannot be linked to an existing account. If you already have a TiDB Cloud account and want to pay through AWS, follow the billing account linking steps below.
+
 To link your TiDB Cloud account to an AWS billing account, take the following steps:
 
 1. Open the [AWS Marketplace page](https://aws.amazon.com/marketplace), search for `TiDB Cloud` and select **TiDB Cloud** in the search results. The TiDB Cloud product page is displayed.