The whole adopts a complete standing hug bear bionic shape, with round ears, short limbs and round belly, full and friendly in shape, which is in line with children's love for plush dolls. The whole machine is designed with large rounded curved surfaces, free of sharp edges and corners, and eliminates hidden dangers of bumps and scratches. The overall shape is simple and honest, like a bear playmate that can be embraced, weakening the cold and serious tool impression of the thermometer and letting children put down their guard. The layout of the side keys and the design of the lanyard hole at the bottom take into account the portability. The lanyard is woven to facilitate carrying and prevent falling and losing.