The specific operation methods can be divided into two types: (1) Buy Average High Method After the first purchase, wait for the stock price to rise to a certain level before buying the second batch, and wait for the stock price to rise by a certain amount before buying the third batch. This is the buying average high method. For example, when the stock price of a certain stock is 20 yuan, the first batch of 1000 shares is bought, the second batch of 800 shares is bought when the stock price rises to 22 yuan, and the third batch of 600 shares is bought when the stock price rises to 25 yuan. The average cost of buying three stocks is (201000 22800 25600)&pide; (1000 800 600)=2191 yuan. When the stock price exceeds this average cost, investors can sell for profit. (2) Buy average low method Also known as the downward spread method, investors buy stocks for the first time, wait for the stock price to drop to a certain level before buying the second batch, and buy the third batch (or even more batches) after the stock price drops by a certain amount again. The buy average low method only allows investors to make profits when the stock price rebounds and exceeds the average cost of buying in batches.