Functional education is relative to basic education. Basic education means learning listening, speaking, reading, writing, scientific and cultural knowledge, etc. , after reading bachelor's degree, master's degree and postdoctoral degree. The country of basic education should always be guiding, but functional education is not. It is entirely out of my own willingness to learn. Whoever is educated will bear the expenses, such as learning computer, taking driver's license and technical training. In order to survive better, my voluntary investment should be regarded as the category of functional education.