The utility model provides a step platform sling stabilizer is dug to mine shaft, belongs to the mine shaft and digs step equipment technical field for dig the step in -process at the mine shaft and stabilize the platform sling. Its technical scheme is: installed electronic hydraulic rod at the platform sling circumference, the landing leg dish of electronic hydraulic rod's front end is relative with the shaft wall of a well, and when the platform sling was stablized to needs, electronic hydraulic rod stretched out, and landing leg pan ding fixes a position the platform sling on the shaft wall of a well, and when the platform sling need move, electronic hydraulic rod regained, and the landing leg dish breaks away from the shaft wall of a well, does not influence the platform sling and reciprocates. The utility model discloses simple structure can shorten the time of stabilizing the platform sling and occuping by a wide margin in the construction, reduced workman intensity of labour, also saves workman's quantity. Guaranteeing that the platform sling can in time put in positive, improving the utilization ratio of equipment, avoiding building the in -process at the wall of a well, influence that wall of a well acceptance of project platform sling brought. The utility model discloses degree of automation is high, easy operation, and convenient to use has created the condition for the speedy drivage of shaft.