First of all, "lean production" refers to the new capitalist production method represented by Toyota Motor Company. Its main characteristics are the ability to respond quickly to market changes, the same assembly line to produce different products, timely supply, a multi-skilled and team-oriented workforce, and the motivation and ability to continuously improve the production process. As a professor from the Department of Economics at the University of Tokyo said, the strength of the Toyota Production System is mainly at three levels: beginners think "reduce inventory"; intermediate people understand it as "finding problems, increasing productivity, and improving product quality"; advanced people think " During repeated efforts to solve problems that arise, if the problem is not found, we will feel uneasy and everyone will work hard to find the problem." To be precise, the Toyota Production System is a lean production method, a lean production system that does not do wasted work.