The invention relates to a bed type air-conditioner which comprises a mattress. A cavity is formed in the mattress, and a heat exchanger and an air guide part are arranged in the cavity. The heat exchanger is horizontally arranged on the upper layer in the cavity, and the air guide part is arranged on the side face of the heat exchanger to enable air flow in the cavity to flow. The bed type air-conditioner has the beneficial effects that the heat exchanger in the mattress of the bed type air-conditioner can be used for adjusting temperatures; the air flow in the cavity is guided and cycled by the air guide part, so that heat exchange efficiency is improved; a fan enables the air flow in the cavity to be cycled and is matched with a ventilation opening to blow out cold air or hot air, so that the cold air or the hot air surrounds the bed type air-conditioner to form the comfortable temperature of the bed and the small space around the bed; the comfort degree is improved, and the sleeping quality is improved; other air-conditioners do not need to be turned on, so that electricity is saved.