U-shaped neck pillow, also known as inflatable travel pillow, is designed based on neck engineering. The material is made of a slow rebound material with a thermal sensation, providing the most average, soft, and authentic support for the head and neck. It can provide a natural stretching state of the human head and neck, without hindering blood circulation, and avoiding neck and shoulder pain caused by naps. It has multiple uses, is healthy and comfortable, and has a significant preventive and therapeutic effect on cervical diseases.