The invention discloses a kit for detecting food, which structurally comprises a frame, a food detecting test tube, a tube fixing table, a dead lock switch, a worktable, a selection switch, a startingswitch, a control panel, a detection switch, and a numerical display screen; and the food detecting test tube comprises an inner working tube, a sliding guiding bracket, a high temperature resistantglass wool layer, an air insulating layer, an outer protective steel tube, and an outer anticorrosive layer. The kit for detecting food in the invention has the advantages that: in order to realize detection integration of the kit for detecting food and for high detection accuracy, the kit for detecting food is provided with the selection switch which can perform selective detection on the food detecting test tube fixed on the tube fixing table; the food detecting test tube is detected and selected through the detection switch on the control panel; the numerical display screen is used for displaying a change numerical value of a food extractive in the food detecting test tube so as to reach integration of food detection; and the high temperature resistant glass wool layer and the air insulating layer on the food detecting test tube can ensure that the air cannot enter in the detection process, thereby improving the detection accuracy.