The invention discloses an internal coating anticorrosion process of a pipe for oil exploitation. The process includes the following steps that (1) the pipe is placed in a hot cleaning furnace, and various greasy dirt and impurities on the inner wall of the pipe are carbonized; (2) the inner wall of the pipe is subjected to surface treatment by two-stage abrasive blasting, treatment conditions of the inner wall are fully and automatically checked, and the inner wall is blown after the treatment is qualified; (3) an A component and B component of double-component epoxy coating TC3000I are mixed according to the proportion of an instruction book, the mixed coating is used for performing one-time spray coating on the inner wall of the pipe, and solidification is performed at normal temperatures; and (4) leak point detection is performed after solidification, and if a leak point is absent, the pipe is qualified. By means of the pipe subjected to internal coating anticorrosion by the internal coating anticorrosion process, the fluid efficiency in an oil well pipe can be improved by above 25%, simultaneously, abrasive resistance, chemical resistance and corrosion resistance of the pipe can be improved, the pipe can be used for a long time at the temperature below 120 DEG C, the application range of the pipe is further widened, and positive effects are achieved on reducing oil exploitation costs.