Inventory cargo available weight query method and device based on cloud system

The invention discloses an inventory cargo available weight query method and device based on a cloud system, the method is suitable for the cloud system, the cloud system is connected with a plurality of user terminals, and the method comprises the following steps: obtaining a query instruction of any user terminal, and sending the query instruction to the cloud system; counting and acquiring the residual available weight of the goods stored in the warehouse based on the real-time inventory information and the opened goods picking plan list information; if the residual weight is greater than zero, acquiring pledge state information of the stock goods, and determining pledge control quantity based on the pledge state information; and calculating the difference value between the residual weight and the pledge control quantity to obtain the available weight of the stock goods, and sending the available weight of the stock goods to a corresponding user terminal. The available weight of the actual stock goods is c