Long white lines on the child’s tonsils may be related to bacterial or viral infection of the tonsils. Generally, it is purulent tonsillitis, and it is recommended that the patient go to the hospital in time for treatment of the cause. The long white lines on your child’s tonsils are usually related to tonsil infections and may be caused by purulent tonsillitis. Pus in the tonsils leads to white thread-like lesions on the tonsils. Typical symptoms are usually severe pain in the child’s throat, chills, high fever, headache, loss of appetite, and fatigue. Symptoms such as difficulty in swallowing and enlarged lymph nodes may also occur. Parents should pay attention to their children’s diet on a daily basis and focus on a light, soft diet. Avoid spicy, stimulating, rough, dry and hard food, and pay attention to strengthening exercise. If necessary, you need to follow the doctor’s prescription medication.