The utility model discloses an intelligent monitoring and comprehensive protection system for a three-phase asynchronous motor, which comprises an electrical control main loop, a three-phase asynchronous motor M, a signal acquisition unit, a signal conditioning unit, and an electrically-erasable, programmable and read-only memory. The signal conditioning unit is connected with a main control unit. The signal acquisition unit is connected with the signal conditioning unit. The main control unit is also connected with the electrical control main loop, a display and storage control unit, an upper computer system and the electrically-erasable, programmable and read-only memory. The display and storage control unit is respectively connected with an input unit and a display panel. According to the technical scheme of the utility model, the problem that by means of existing protection equipment, motors are in open-phase operation in the single-phase breaking condition and are poorly protected, while the protection equipment cannot effectively come into play under the influence of environmental factors, can be solved.