There are many kinds of industries, such as agriculture, forestry, animal husbandry and fishery, mining, manufacturing, electric power, heating, non-profit organizations, construction, transportation, warehousing and postal services, information transmission, software and information technology services, wholesale and retail, accommodation and catering, finance, real estate, leasing and business services.

Occupation classification:

According to the theory put forward by some scholars in western countries, occupations in foreign countries are generally divided into the following types:

(1) According to the nature and level of mental labor and manual labor. This classification divides staff into two categories: white-collar workers and blue-collar workers. White-collar workers include: professional and technical jobs, managers and administrators outside the farm, salespeople and office workers.

Blue-collar workers include: craftsmen and similar workers, non-transport technicians, transport equipment workers, workers outside farms, and workers in service industries. This classification method obviously shows the hierarchy of occupations.

(2) Classification according to individual psychological differences. This classification method is based on the "personality-occupation" type matching theory founded by Holland, a famous American career guidance expert, and divides personality types into six types, namely, realistic type, research type, artistic type, social type, enterprise type and conventional type. Corresponding to it are six types of occupations.