It is divided into three stages, namely, pre-training evaluation, in-training evaluation and post-training evaluation.

Vocational training is an educational and training activity aimed at cultivating and improving the quality and vocational ability of employed and on-the-job workers who directly meet the needs of economic and social development. Its meaning: ① it is a kind of labor resource development activity with workers as the specific object; (2) It is a kind of directional training, which aims to directly meet the specific needs of social and economic development; (3) Usually, standardized training is conducted according to the national vocational classification and vocational skill standards.