The invention relates to a portable cold accumulation individual thermal protection device. The device comprises a liquid cooled suit and a cold accumulation pot, and the cold accumulation pot comprises a cold accumulation machine, a circulating water pump and a storage battery; the cold accumulation machine is divided into an inner layer and an outer layer, cold accumulation mediums are arranged in the inner layer of the cold accumulation machine, and cooling liquid is arranged in the outer layer of the cold accumulation machine and the liquid cooled suit; water inlets and water outlets are both formed in the liquid cooled suit and the cold accumulation pot, and the outer layer of the cold accumulation machine and the liquid cooled suit are connected to form a loop through the water inlets and the water outlets; the circulating water pump is arranged on the water inlet of the cold accumulation pot; the storage battery is connected with the circulating water pump. According to the portable cold accumulation individual thermal protection device, the liquid cooled suit is organically combined with the cold accumulation pot, through two-stage heat exchange, cold energy stored by the cold accumulation mediums is transmitted to the surface of the human body, and the comfort degree of the human body is improved; the cold accumulation mediums are intensively stored in the inner layer of the cold accumulation pot, the cold energy is gradually transmitted to the human body by circulating the cooling liquid, and the waste of the cold energy is avoided; the cold accumulation pot is small in size and low in weight, the flat structural design is suitable for bearing of the human body, and bearing of other equipment is not influenced.