Container house is a building system that hits the fashion trend again. It can be moved to various places anytime, anywhere, bringing people a more convenient and comfortable life. The solar photovoltaic panels can be used for indoor electricity, and the solar water heater can provide heating and water supply. The discharge of indoor showers and domestic water is purified by the sewage treatment system for reuse. Depending on the number of people, container houses of different sizes can be made.