The document describes a new heating and sealing structure for a rice cooker that uses micro-pressure technology. It has a unique patent sealing design and micro-pressure level of 1.1 times atmospheric pressure that allows for fully cooked rice with few remaining after rinsing. The vertical switch design prevents water splashing and leakage even if dropped. It also has advantages like a patent valve for steam release and energy savings as well as a double wall design for safety.