When buying limit up stocks, the following points should be noted: (1) When the entire sector is launched, it is important to catch up with the leader who reaches the limit up first, especially in bull markets or extremely strong markets. To catch up, it is important to catch up with the first one to reach the limit up. (2) Search the price increase ranking list in a timely manner during the trading session, and review the current prices, previous trends, and circulating size of stocks close to the limit up to determine whether they can be used as intervention targets. When the increase reaches 9% or more, be prepared to buy to prevent the main large orders from hitting the limit up and not being able to buy.