Public services can be divided into basic public services, economic public services, public security services and social public services according to their contents and forms. Basic public services refer to those basic services that citizens and their organizations need to engage in production, life, development, entertainment and other activities through state power intervention or public resources investment, such as providing water, electricity, gas, transportation and communication infrastructure, post and telecommunications, meteorological services, etc. Economic public service refers to all kinds of services provided for citizens and their organizations, that is, enterprises, to engage in economic development activities through state power intervention or public resources investment, such as science and technology promotion, consulting services, policy credit and so on. Public security service refers to the security services provided to citizens through the intervention of state power or the input of public resources, such as military, police, fire fighting and other services. Social public service refers to the service provided to meet the direct needs of civil society development activities through state power intervention or public resources investment. The fields of social development include education, popularization of science, health care, social security and environmental protection. Social public services are the direct social needs to meet the survival, life and development of citizens, such as public education, public medical care and public social welfare.

Classification according to professional attributes:

According to the major attributes, it can also be divided into: national defense construction, public assistance and disaster relief at home and abroad, laws, regulations and policies, cultural and economic industry development and construction, spiritual and material civilization construction, information construction, standardization construction, industrialization construction, urbanization construction, characteristic industry construction, financial insurance and consumption construction, and professionalization and specialization construction and development.

According to the engineering specialty attribute classification:

According to the engineering specialty, it can also be divided into: national defense engineering, public facilities engineering, people's livelihood engineering, housing engineering, rule of law engineering and so on.