The utility model discloses a fixing mechanism for a
food safety detection
test tube, which relates to the technical field of
food safety detection and comprises a
cart, fixing plates are fixedly arranged at two ends of the
cart, a fixing shaft is fixedly arranged in the middle of each fixing plate, two rotating rollers are symmetrically and rotatably arranged on each fixing shaft, and two pairs of supporting rods are symmetrically arranged on each rotating roller. Circular shafts are rotatably arranged on the inner sides of the supporting rods, and
test tube containing boxes are fixedly arranged at the ends of the circular shafts. The four
test tube placing boxes are arranged on the trolley, so that a
detector can conveniently push the trolley to draw and
store food into test tubes along a food
production line, the positions of the upper test tube placing box and the lower test tube placing box are replaced during use, and the test tube placing boxes are kept balanced through the balancing
assembly during position replacement; the test tube placing box faces upwards all the time, the test tubes are kept stable, the storage amount of the test tubes is increased, and meanwhile detection personnel can take the test tubes conveniently.