The invention discloses a blood sugar content detector for a clinical laboratory. The blood sugar content detector comprises a detector body; first hinged rods arranged symmetrically are hinged to thetwo sides of the detector body; second hinged rods are hinged to the side walls of the first hinged rods; a blood collection tube is mounted at the bottom end of the detector body; a movable plate isin sliding seal connection with the inner wall of the blood collection tube; the movable plate is in through connection with a blood collection needle arranged vertically; a movable rod is connectedto the top end of the blood collection needle; one ends, far away from the first hinged rods, of the second hinged rods extend into the detector body, and penetrate through the blood collection tube to be hinged to the circumferential side wall of the blood collection needle; a fixed plate is connected to the upper section of the circumferential inner wall of the blood collection tube; and the topend of the movable rod penetrates through the fixed plate. According to the detector, a detected person can be fixed based on different sizes, so that the fingers of the detected person can be prevented from shaking, and the blood collection efficiency can be improved; the blood collection and detection operations can be carried out in time, so that a blood sample can be prevented from being changed, and the detection accuracy is improved; and therefore, the detector is suitable for popularization.