A: Concept: refers to the activity or process in which training departments, supervisors and staff use various methods and technologies to systematically identify and analyze the objectives, knowledge and skills of various organizations and their members before planning and designing training activities to determine whether training and training content are needed. Function: the first link of enterprise training; Clear the gap; Determine the value and cost of training; It is beneficial for all parties in the enterprise to reach an understanding and get assistance from all parties in the enterprise.