The parameter can be a given constant value for a given application; Generally speaking, it can be a variable to control other variables that vary with it. Parameters are now available in many mechanical settings or maintenance options. How to understand parameters? Literally, it is data for reference, but sometimes it is not all data. We can search related parameters-view parameters. In short, the parameters are for our reference. Some of them are difficult for us, too. That is the parameter setting. In statistics, it is a general numerical measure to describe the characteristics of the population, and it is a certain eigenvalue of the population that researchers want to know. In mathematics, the idea of parameters is carried out in analytic geometry. For geometric variables, people use algebraic expressions containing letters to represent variables, which are called parametric expressions, and letters are called parametric expressions. Parameterization method is also the source of many problem-solving skills.