Well cellar for storing things fertilizer injection unit belongs to tobacco fertilization equipment technical field, including the frame, the frame include the support body with install in the gyro wheel of support body bottom, the front portion of support body is provided with the traction lever, the liquid storage pot, the liquid storage pot is detachable install in on the support body, just the liquid storage pot has the opening, a water pump, the water pump install in the inside of liquid storage pot to the intercommunication has the outlet pipe, the outlet pipe extends to the open -ended is outside, just be provided with the manifold on the outlet pipe, the terminal tieback of manifold extremely in the liquid storage pot, and fertilization hose, fertilization hose installation in the end of outlet pipe. The utility model discloses change traditional fertilization mode, improved work efficiency greatly, avoided the damage to tobacco seedling, simultaneously, also reduced the waste of fertilizer.