The invention relates to the technical field of roadblock equipment, and provides a lifting column convenient to maintain and a working method thereof. The lifting column comprises a control system, an outer cylinder and an inner cylinder, wherein the inner cylinder comprises a guide section and an anti-collision section, the anti-collision section is bonded with the guide section, a plurality ofclamping grooves are formed in the anti-collision section, and an infrared sensor is mounted at the upper part of the anti-collision section. The lifting column further comprises a locking mechanism,wherein the locking mechanism comprises a fixing disc, a first through hole is formed in the fixing disc, a plurality of accommodating grooves are formed in the fixing disc, each accommodating grooveis internally provided with a locking assembly, the locking assembly comprises a clamping block, a spring and a baffle, the spring enables the clamping block to have the tendency of leaving the accommodating groove, the baffle is arranged in the first through hole and can slide on the fixing disc, the upper part of the baffle abuts against the clamping block to prevent the clamping block from leaving the accommodating groove, a second through hole is formed in the baffle, and the clamping block can leave the accommodating groove from the second through hole. According to the lifting column convenient to maintain and the working method thereof, the intercepting effect is better, and maintenance is convenient after damage.