Moving average is a curve that connects the average value of stock index or stock price in a certain period of time on a coordinate graph, which can be used to judge the future movement trend of stock price.

The common lines of EMA are 5 days, 10 days, 30 days, 60 days, 120 days and 240 days. Among them, the short-term moving averages of 5 days and 10 days. It is a reference index of short-term speculation, called moving average index; 30 days and 60 days are medium-term moving average indicators, called quarterly moving average indicators; 120 and 240 days are long-term moving average indicators, which are called annual moving average indicators. The investigation of the moving average is generally carried out from several aspects.