An automobile automatic transmission gearshift unlocking mechanism is used for controlling the stopping of an anti-misoperation system when a transmission is switched among P/R/N gears. The mechanism comprises a handball, a lifting handle, a gearshift rod, a gearshift rod mandrel, a mandrel fixing pin, and a limit pin. The handball is fixedly connected with the upper part of the gearshift rod through screw threads. The handball is internally provided with a cavity matching with the outer wall of the top end of the lifting handle. The upper and lower ends of the lifting handle are respectively provided with an upper clamping groove and a lower clamping groove. The lifting handle and the gearshift rod are assembled in a clearance fit manner. The gearshift rod and the gearshift rod mandrel are assembled in a clearance fit manner. The upper and lower parts of the gearshift rod are respectively provided with a mandrel fixing pin penetrating groove and a limit pin penetrating groove. The middle part of the gearshift rod is provided with a boss assembled with the lower clamping groove of the lifting handle. The upper part of the gearshift rod mandrel is radially assembled with the mandrel fixing pin while the lower part of the gearshift rod mandrel is radially assembled with the middle part of the limit pin in a transition fit manner. The automobile automatic transmission gearshift unlocking mechanism is simple in handball structure, low in manufacture cost, good in overall interior trim matching effect, and capable of improving the gearshift quality.