Inventory managers lack scientific knowledge of inventory management, or lack of management experience, can not use scientific and correct methods for comprehensive inventory management, can not reply in time when problems occur, enterprises make reasonable adjustments to inventory, resulting in excessive inventory or inventory shortage, affecting the cash turnover of enterprises, thus affecting the interests of enterprises. More importantly, due to the lack of supervision, some buyers in the enterprise collude with some external suppliers to seek personal interests and harm the interests of the enterprise. For example, in order to get kickbacks and commissions, some purchasers even pay close attention to their own interests when conducting procurement business. These behaviors have seriously damaged the long-term development of the enterprise.