Working capital loan is a loan issued to make up the cash gap in the circulation of current assets of enterprises, meet the temporary and seasonal capital demand of enterprises in the process of production and operation, or the long-term average liquidity demand of enterprises in the process of production and operation, and ensure the normal operation of production and operation activities. Liquidity loans in corporate loan business are divided into one-time liquidity loans, one-time zero-compensation liquidity loans, revolving liquidity loans and corporate account overdrafts.