Portable child hydrogen and oxygen inhalation concentration measuring instrument

The utility model discloses a portable children oxyhydrogen gas inhalation concentration measuring instrument, which comprises a measuring instrument body, one side of the measuring instrument body is provided with a placing groove, and the bottom of the inner wall of the placing groove is rotatably connected with a concave shell through a hinge. Through cooperation of the placing groove, the concave shell and the placing frame, the sampling probe and the measuring instrument body can be placed together, the sampling probe can be protected, the use efficiency of the concentration measuring instrument is effectively improved, and through cooperation of the concave block, the T-shaped rod, the spring, the rectangular groove, the hand-screwing bolt, the connecting rod and the limiting rod, the sampling probe can be conveniently placed on the measuring instrument body. According to the measuring instrument, the concave shell can be conveniently and quickly opened and closed, the T-shaped rod can be ensured to ver