An air treatment device with natural cold and heat supply includes a compressor, a four-way valve, a gas liquid separator, a condenser, a throttling means and an evaporator. The invention is characterized in that: a heating pipe valve and a heating pump valve are added on the pipeline where the four-way valve is disposed, valves are in parallel connection with both ends of the throttling means, wherein, a high position machine and a low position machine are provided for accommodating the corresponding components. According to the invention, refrigeration and heating functions of the original system is reserved, furthermore, a heating pipe natural circulation is introduced, thereby, energy waste problem in winter and transition seasons for water circulation heating pump system building can be resolved, meanwhile, the high position energy loss during complementing heat in winter is avoided. A refrigeration agent can be additionally provided in the invention to maintain the operation performance of the heating pipe circulation, thus further increasing the energy-saving performance and the reliability of the heating pump air conditioning system. The invention is applicable for the other situations to transfer heat from the high temperature fluid end to the low temperature fluid end, and has advantages of energy-saving and reliability.