The utility model discloses a concentration kettle for extracting lycorine from lycoris plants. The reaction kettle comprises a kettle body, a core barrel is vertically arranged in the center of the kettle body; the side wall of one side of the lower portion of the core barrel is provided with a feeding pipe in the tangential direction, a supporting ring is arranged on the outer side of the core barrel, stirring paddles are evenly arranged on the outer wall of the supporting ring in the circumferential direction, a rib plate is arranged at the top of the supporting ring, the other end of the rib plate is connected with the bottom end of a rotating shaft, and the top end of the rotating shaft is connected with a motor; an end socket is arranged at the bottom of the kettle body, a dischargepipe is arranged at the bottom of the end socket, a steam outlet is formed in the top of the kettle body and connected with a cooler through a steam pipe, and an outlet of the cooler is connected witha vacuum pump. The utility model provides the concentration kettle for extracting lycorine from lycoris plants, which can be used for concentrating and evaporating at normal temperature, preventing active ingredients of lycorine from being damaged due to over-high temperature, increasing the granularity of flocculent particles of an extracting solution, accelerating the settling speed of the flocculent particles and further improving the concentration efficiency.