There are fundamental and technical analysis.
Fundamentals basically refer to the trend of the spot market in the big environment. For example, for steel, we should analyze and study its raw material-iron ore. Today's import price is higher or lower than yesterday's, and the cost will inevitably rise. It is even necessary to study whether all kinds of news released by the state are good or bad for the market. There are many details, so get familiar with them when you do it.
Technically, look at the k-line diagram and so on. This is even more complicated.