Vocational and technical training: Vocational and technical training investment is the investment expenditure incurred by people to acquire and develop the knowledge, skills and skills needed to engage in a certain occupation. This kind of investment mainly focuses on the occupation, specialty and knowledge and skill stock in the composition of human capital. Its performance is the professional technical level in the composition of human capital.
Medical care: the cost of medical care and physical quality improvement is also the main form of human capital investment, including the cost of nutrition, clothing, housing, medical care, self-care, exercise and entertainment, which can be composed of "healthy time" or "disease-free time" for work, consumption and leisure activities. The effect of this investment is mainly manifested in the increase of life expectancy and the decrease of mortality.
Formal education: Education investment is the most important form of human capital investment, including the expenses of preschool education and formal education such as primary schools, middle schools and universities. Regardless of the government, social organizations, individual workers and their families, the expenses invested by their investors in general education belong to human capital investment. This form of investment forms and increases the knowledge stock of human capital, which is manifested as the "general education level" in the composition of human capital, that is, academic qualifications are used to reflect the stock of human capital.