Touching the flesh lump inside the thigh root may be related to lipoma, fibroma, sebaceous cyst and other reasons. 1. Lipoma: it mostly occurs in the subcutaneous of limbs and trunk, with soft texture and no pain, but when it presses the nerves or when the lipoma is suppurated and inflamed, it will cause pain. 2. Fibroma: the onset of fibromatosis is more insidious, patients may inadvertently find that there is a painless or slightly painful swelling in the limbs or trunk. 3. Sebaceous cysts: The sebum secreted by sebaceous glands is not normally discharged from the follicular opening, resulting in the accumulation of cysts in the glands. It is recommended to go to the regular hospital in time for those who feel the flesh lumps inside the thigh root, to clarify the cause of the disease, and to carry out standardized treatment under the guidance of the doctor.