The excess cash guarantee multiple is the ratio of net operating cash flow to net income over a certain period of time, which may reflect the degree of cash income guarantee in the company's current net income, and really reflects the quality of the company's surplus. Generally speaking, when the company's current net income is greater than 0, the excess cash guarantee multiple should be greater than 1, the higher the indicator, the greater the contribution of net income to cash generated by the operation of the business is important.