The invention discloses a temperature adjustable egg hatching device which comprises a shell, a draught fan, a water storage chamber, an air inlet, a material loading frame and a door, wherein the air inlet is mounted in the bottom end of one side of the shell, an air outlet is mounted in the other side of the shell, the draught fan is mounted in the air outlet, heaters are mounted on the two sides in the shell, a temperature sensor and a humidity sensor are mounted at the bottom of the heater, the material loading frame is arranged on the central position in the shell, a plurality of egg storage frames are mounted on the inner side of the material loading frame, a plurality of ventilating holes are formed in the bottom surface and the side surfaces of the egg storage frame, a plurality of bosses are arranged on the bottom side of the inner part of the egg storage frame, the door is arranged on the front side of the shell, a controller is arranged on one side of the door, and the temperature sensor, the humidity sensor, the draught fan and the heaters are all electrically connected with the controller. The internal temperature is well controlled as the temperature adjustable egg hatching device is provided with a cold water sprayer, a steam nozzle, the humidity sensor, the temperature sensor and a guide fan.