Human resources are economic resources existing in people's physique, knowledge, skills, abilities, personality and behavior characteristics and tendencies. Like other resources, human resources are material, available and limited. The materiality of human resources means that only a certain population can have a certain amount of manpower; A certain human resource will inevitably show a certain crowd. The availability of human resources means that greater value can be created by using physical quality, knowledge, ability, personality and behavioral characteristics and tendencies (such as personality and values). The finiteness of human resources means that human resources are limited in quality and quantity, which can only be formed under certain conditions and used on a certain scale.