Heat preservation bag capable of being torn and attached

The utility model discloses a heat preservation bag capable of being torn and attached, the heat preservation bag capable of being torn and attached is used for being attached to the outer portion of an article for heat preservation, the heat preservation bag capable of being torn and attached comprises a bag body and a plurality of temperature adjusting pieces, the bag body is made of a moldable material, and the bag body comprises a water absorption layer and a heat preservation structure; an interlayer space is formed between the water absorption layer and the heat preservation structure, the bag body is provided with a plurality of easy-to-tear lines, the easy-to-tear lines are formed on the surface of the bag body, and the easy-to-tear lines have a plurality of tearing directions so as to divide the bag body into a plurality of bag bodies; meanwhile, the interlayer space in the bag body is also divided into a plurality of small interlayer spaces, each temperature adjusting piece is installed in the corre