The invention discloses a miniature environmental control device with the refrigerating function and the heating function. The miniature environmental control device comprises a refrigerating fluid circulation system, a water circulation system and a micro-channel evaporator, wherein the refrigerating fluid circulation system and the water circulation system are connected with the micro-channel evaporator. The refrigerating fluid circulation system comprises a compressor, a condenser, a filtering tank and a capillary tube, wherein the compressor, the condenser, the filtering tank and the capillary tube are connected in series, and the condenser is provided with a fan used for carrying out aeration cooling on the condenser. The water circulation system comprises a water pump and an electric heater, wherein the water pump and the electric heater are connected in series. The electric heater and the micro-channel evaporator are provided with heat-sensitive probes. The miniature environmental control device has the refrigerating function and the heating function, is small in size and can meet the function requirements of a portable human body protection device.