On Amazon, keyword ranking refers to the position of your product in the search results page under a specific search keyword. Knowing the ranking of your products under specific keywords is very important for increasing exposure and attracting customers. Here are some ways to check your Amazon keyword ranking:

Manual search: Enter your keywords in Amazon's search field, and then browse the search results page to see where your products are displayed. Please make sure to use the Amazon website related to your target market and region for search.

Tools and software: There are some third-party tools and software that can be used to track Amazon keyword rankings. These tools can provide more detailed ranking data and trend analysis. Some popular tools are jungle scouts, helium 10, Sellics and so on. These tools usually require subscription or payment.

Amazon Advertising Report: If you run advertisements on Amazon, you can use Amazon Advertising Report to check keyword ranking and advertising effect. These reports provide the ranking and click-through rate data of your advertisements under specific keywords.

Amazon's search ranking is dynamic and will change with time, sales and other factors. Monitoring your keyword ranking regularly is a way to continuously optimize and improve the performance of your products on Amazon.