The invention relates to a movable bath room with solar energy technology and a water receiving tank, which comprises eleven parts: an umbrella-shaped water tank, an umbrella-shaped base, an umbrella-shaped top frame, three struts, two arched panels, two lateral plates, two arched sliding doors/movable doors, an umbrella-shaped rooftop, a coin device and a time selector, a solar water heater and a solar battery plate; the movable bath room is used as a commercial bath room and is suitable for being mounted in a street/a commercial center/a commercial pedestrian street/a bath center/a stadium/an amusement park/a park of a city or a town; currently, as the living environment and the living level are continuously improved, people keen on shopping and playing more and more, namely shopping; however, shopping is a very painstaking thing in a large city, in particular in hot summer or cold winter; shopping can make people sweat a lot in the hot season; shopping can make people shiver in the cold season; people feel comfortable if people immediately have a cold water bath or a hot water bath when sweating a lot or shivering in shopping; and the introduction of the movable bath room can just meet the wish of the people; and the movable bath room can greatly save water resource.