Sampling valve, urine collection system and closestool

The invention relates to the technical field of urine detection, and discloses a sampling valve, a urine collection system and a closestool in order to reduce the contamination to urine collection andimprove the accuracy of urine detection. The sampling valve comprises a shell and a valve element arranged in the shell, wherein the shell is provided with a first opening and a second opening, the valve element is arranged between the first opening and the second opening and slidably connected with the shell, the end, near the first opening, of the valve element is provided with a fluid channelfor fluid to pass through, the valve element is made from deformable materials, the portion, near the first opening, of the valve element is formed into a conical structure, and the conical structureis provided with an opening communicated with the fluid channel. According to the difference of the stress of the conical structure, the sampling valve has two working states, independence of the twoworking states is ensured, c