Liquid nutrition measuring instrument

The invention relates to the technical field of food detection, and particularly discloses a fluid nutrition measuring instrument which comprises a machine shell, a placement groove is formed in the outer surface of the machine shell, a sampling tube is installed in the placement groove through an elastic piece, a covering plate is slidably installed in the machine shell, and one side of the covering plate extends into the placement groove; through the arrangement of the detachable sampling tube and the internal storage mechanism, the detection mechanism can conveniently and effectively detect different nutritional ingredients of the liquid food, the collected liquid food can be sealed and stored after detection, storage and sampling are facilitated, and meanwhile, when different liquid food is detected, the detection efficiency is improved. The liquid food sampler is simple in structure and convenient to use, only different sampling tubes need to be replaced, use is more sanitary, accuracy of detection data