Water sample storage device for detecting nitrogen and phosphorus contents of surface water

The utility model discloses a water sample preservation device for detecting nitrogen and phosphorus content of surface water, which comprises a box body and a box cover hinged on one side of the top of the box body, a placing frame is arranged on a support plate arranged in the middle of the box body, and a plurality of groups of placing cavities capable of placing water sample bottles are arranged in the middle of the placing frame. The box cover is provided with a containing cavity, a clamping assembly used for clamping a water sample bottle is arranged in the containing cavity, a lifting assembly is further arranged in the box body, the water sample bottle can be jacked upwards through the lifting assembly when the box cover is opened, the water sample bottle can be clamped and fixed through the clamping assembly in the water sample bottle transporting process, and damage caused by shaking is avoided; when the water sample bottle is taken out, the water sample bottle can be jacked upwards for a certain di