The invention discloses an incubator, which comprises an upper cover, a tank body and a lower cover, wherein the upper cover and the lower cover are respectively buckled on the upper end and the lower end of the tank body; the upper surface of the upper cover is provided with a power connection and a display controller; the lower surface of the upper cover is provided with a cooling plate, a temperature detection head, a temperature detection head, a mica sheet heater and a fan; the cooling plate is provided with a plurality of first through holes and is clamped in an upper cover; the temperature detection head, the temperature detection head, the mica sheet heater and the fan are all arranged between the cooling plate and the upper cover; the input end of the display controller is connected with the temperature detection heads; the output end of the display controller is connected with the mica heater and the fan; the mica heater and the fan are both installed on the top of the lower surface of the upper cover; the tank body is provided with an egg support; the lower cover is provided with a water tank; the water tank is provided with a plurality of water injection channels. The incubator has the advantages of simple structure, artful design and convenience in assembly and disassembly, the integral performance of the incubator is enhanced, the use cost of equipment is lowered, and the hatchability of poultry eggs is further improved.