The invention discloses a device convenient for sanitation of field drinking water. The device consists of a water storage part, a sucking part, a filtering part and a water outlet part; the water storage part comprises a sleeve; external threads I at the upper part of the sleeve are in match connection with internal threads I of an upper cover with a round through hole I; a round through hole II is formed in the bottom end in the sleeve; the sucking part comprises a handle, a push-pull rod and a rubber cup; the rubber cup sleeves the lower part of a round plate and is adhered and fixed by adopting a strong adhesive; the filtering part comprises a straw, a round filter plate, an activated carbon filter core, a round filter net and a lower cover; water inlet holes are uniformly distributed in the bottom end of the lower cover; meshes of the round filter net has 100-300 meshes; the round filter plate, the activated carbon filter core and the round filter net are arranged in the lower cover in sequence from top to bottom; the lower cover is matched and connected with external threads II at the lower part of the straw; the water outlet part comprises a water outlet pipe and a ball valve. The device can be used for conveniently and fast obtaining the drinking water in accordance with sanitation requirements from a field water source.