A hydraulic expansion cone for sleeve repair is applied to the field of underground sleeve repair technologies in oil patches and comprises three main parts, namely a hydraulic anchor, a multi-stage hydraulic cylinder and an expansion cone, wherein the lower end of the hydraulic anchor is connected with the multi-stage hydraulic cylinder through a collar, an upper outer barrel is sheathed on the pull and lift pipe, and a pressure release hole is formed in the wall of the upper outer barrel; an upper central pipe is arranged at the lower end of the pull and lift pipe; a ring-shaped upper seal receptacle is arranged in a ring-shaped space between the upper outer barrel and the upper central pipe; a connecting outer barrel is connected to the lower end of an upper connecting barrel; a ring-shaped plug is arranged at the lower end of the upper central pipe and connected to a lower central pipe, and a lower seal receptacle is arranged in the ring-shaped space between the lower central pipe and the connecting outer barrel; and a lower outer barrel is connected to the lower end of the connecting outer barrel through a lower connecting barrel, and the expansion cone is connected to the lower end of the lower outer barrel through external threads. The utility model has the benefit that mechanical power is provided through hydraulic pressure, so as to perform expansion repair to a reducing sleeve, thereby achieving feasibility and economical efficiency of the construction, and effectively reducing the drilling cost.