There is no fixed qualified standard for Amazon inventory performance indicators, because inventory performance varies depending on factors such as product category, sales history, seasonal demand, etc. Generally speaking, Amazon sellers need to pay attention to the following indicators: Inventory cycle: The inventory cycle refers to the time from purchase to sale. The shorter the cycle, the faster the inventory turnover and the less financial pressure. Generally speaking, Amazon sellers should strive to control the inventory cycle within 30 days. Inventory-to-sales ratio: The inventory-to-sales ratio refers to the ratio of inventory to sales. The smaller the inventory-to-sales ratio, the faster the inventory is sold and the better the inventory management. Generally speaking, Amazon sellers should control the inventory-to-sales ratio within 2:1. Inventory backlog: Too much inventory backlog will lead to increased storage costs, and it will also occupy funds and affect capital turnover. Therefore, Amazon sellers should try to avoid too much inventory backlog. In short, Amazon sellers need to formulate reasonable inventory performance indicators based on their actual situation and business needs, and continuously optimize inventory management to improve inventory turnover and sales performance.