The invention discloses a mobile unpowered drinking water device, which comprises: a primary water lifting system, a dosing system, a water purification system, a backwashing system, and a central control system. The mobile drinking water treatment device can It consists of one or more water purification units, which can be combined on site according to the water demand. The process flow of the device is as follows: the raw water enters the flocculation reaction tank through the first-stage water pump, and the medicament enters the flocculation reaction together with the raw water through the tubular mixer. pool, and then enters the membrane pool and is filtered by the low-pressure osmotic membrane module. At this time, most of the suspended solids, colloids, and some bacteria and viruses in the water body are removed. Water is pumped to urban or rural water distribution networks. The water treatment process of the present invention is simple, easy to operate, high degree of automation, good water quality, filter equipment can be made into a container, easy to move, no external pressure in the filter process, long service life, greatly saving costs and maintenance costs, the device It can be used in fields such as military field operations, field building construction, and emergency water use in cities and rural areas.