Moneyflow is a mature technical index in the world. The calculation method is simple. For example, in the minute of 9:50, if the index of a certain sector is higher than that of the previous minute, then the turnover in the minute of 9:50 is regarded as capital inflow, otherwise it is regarded as capital outflow, and if the index has not changed compared with the previous minute, it is not counted. Calculated once every minute and summarized once a day, the difference between capital inflow and outflow is the net capital inflow of the day.

The principle of capital flow is the direction that funds actively choose in the stock market. Analyzing the flow of funds from the perspective of quantity, that is, observing the transaction volume and amount, is directional in actual operation, buying or selling.

In particular, some investors have misunderstood the meaning of capital flow literally, and they think that capital flow is the entry or exit of funds. The capital flow is actually a data index system that reflects the long and short trading willingness of the market and the trading willingness of major retail investors. The analysis of capital flow belongs to the dual fields of behavioral finance and technical indicators. It is of great reference significance for short-term operation to analyze and predict the stock price behavior by analyzing the willingness to buy and sell long and short and the game behavior of the main retail investors.