1, the reaction layer, that is, the students' reaction. At the end of the factory training, the overall reaction and feelings of the employees after the training are understood through investigation. 2. The learning level, that is, the learning effect, determines the students' understanding and mastery of the training contents such as reasoning, skills and positions. 3. Behavior layer, namely behavior change, determines the behavior change of trainees in the realization of work, so as to judge the influence of knowledge and ability on practical work. 4, the result layer, that is, the effect, can be achieved through some indicators, such as accident vehicles, productivity, employee turnover rate, quality, employee morale, and enterprise service to customers.

The four-level evaluation model of training has become an important standard for the evaluation of training effect in Chinese enterprises. However, in quite a few enterprises, the evaluation of training effect generally stays at the first or second level, and there is no in-depth (third or fourth level) training evaluation report.