The main criteria for diagnosing lymphatic tuberculosis are whether there is past medical history, related symptoms, tissue biopsy, laboratory tests or imaging tests. 1. Whether there is past medical history: the doctor will ask the patient whether he/she has suffered from tuberculosis in the past, and patients who have suffered from tuberculosis are often prone to relapse. 2. Symptoms: The doctor will palpate the lymph nodes, which are usually enlarged, painless or accompanied by slight pressure and pain, and the lumps are medium in texture and movable. Some patients also have low fever in the afternoon, accompanied by fatigue and loss of appetite. 3. Tissue biopsy: Mycobacterium tuberculosis can be observed in tissue culture after lymph node puncture biopsy. 4. Laboratory tests or imaging tests: Laboratory tests show elevated C-reactive protein, positive conjugated antibodies, and positive tuberculin test in the blood. Imaging tests may show a specific “eye sign” on ultrasound, i.e., symmetrical necrosis in the lymph nodes. The clinician will consider all of these criteria together to make a final diagnosis of whether or not the patient is suffering from lymphatic tuberculosis.