▎ 摘　　要

NOVELTY - The device has a heating sheet (2) whose end is connected with a base layer (1). Another end of the heating sheet is covered with a medical cotton layer. The heating sheet is equipped with a first graphene sheet (4) and a second graphene sheet (5). A side wall of the heating sheet is connected with a lead plate (3). The first graphene sheet and the second graphene sheet are connected with a transmission line (6). An end of the first graphene sheet is connected with a positive electrode head (7). An end of a negative electrode head (8) is connected with a negative wire. USE - Portable electric heating device. ADVANTAGE - The device is convenient to carry, and improves heating plate thickness and heating plate strength without need of a positive electrode sheet and a negative electrode sheet to form an electrifying loop. DESCRIPTION OF DRAWING(S) - The drawing shows a side view of a portable electric heating device. Base layer (1) Heating sheet (2) Lead plate (3) Graphene sheets (4, 5) Transmission line (6) Positive electrode head (7) Negative electrode head (8)