Telescopic stabilizing tooth of self-rotating drill bit

The utility model relates to a telescopic stabilizing tooth of a self-rotating drill bit. The telescopic stabilizing tooth comprises an outer shell and an inner cylinder, the device further comprises an upper end cover and a sliding block. The sliding block is sealed with the lower end of the outer shell; stabilizing teeth are arranged at the bottom end of the sliding block; one end of the spring is connected with the upper end cover, and the other end of the spring is connected with the inner cylinder; a positioning step is arranged on the inner wall of the outer shell; the lower part of the inner cylinder is in sliding connection with the sliding block through a sliding connecting block; the end part of the sliding connecting block is hemispherical; an arc-shaped slideway is arranged on the side wall of the sliding block, the arc-shaped slideway is an annular groove with one closed end, the depth of the annular groove is consistent with the radius of the hemisphere at the end part of the sliding connection