Bumps on the side of the sublingual folds may be cysts of the sublingual gland, dermoid cysts of the floor of the mouth, oral ulcers and other diseases. 1. Sublingual gland cyst: mainly occurs in the sublingual area and submandibular area, which is caused by injury or duct obstruction that prevents secretions from being discharged. It is usually asymptomatic and may appear as a soft, painless lump. 2. Dermatoid cysts of the floor of the mouth: most common in children and young people, slow-growing, mostly caused by sebaceous glands secreting large amounts of sebum and epithelial shedding. It may appear as a painless growing mass and may be located at the floor of the mouth. 3. Mouth ulcers: a more common disease, the etiology of which is still unclear and may be related to genetic, environmental, dietary and other factors. In severe cases, ulcers can appear in the mouth, under the tongue and other parts of the mouth, and there are bumps and so on. Sublingual folds side long pimples cause more, it is recommended that the patient to the hospital in time to identify the cause of the disease to take symptomatic treatment, to avoid delays in the condition.