The invention relates to an intelligent inspection well anti-falling device and an application method thereof. The intelligent inspection well anti-falling device comprises a supporting body portion,a supporting accessory and an automatic control system. The supporting body portion comprises a groove type frame portion and a supporting disc. The groove type frame portion is arranged at a well mouth of an inspection well, and the outer diameter of the groove type frame portion is the same as the inner diameter of the well mouth of the inspection well. The supporting disc is arranged in the groove type frame portion through the supporting accessory. The automatic control system comprises an electric control box arranged on the inner wall of the well mouth of the inspection well. An anti-falling auxiliary device is further arranged at the bottom of the groove type frame portion. The electric control box is in control connection with the anti-falling auxiliary device. The intelligent inspection well anti-falling device has the advantages that structural design is reasonable; mounting and using are convenient; the maintenance cost is low; the intelligent degree is high; safety performance is reliable; and the situation that personnel fall off or are hurt after falling off can be effectively avoided or reduced.