A hard lump felt in the left groin is painless and itchy, which may be caused by inguinal hernia, lipoma, inguinal granuloma, etc. Targeted treatments such as medication and surgery need to be carried out under the guidance of the doctor. 1. Inguinal hernia: most patients do not have obvious symptoms in the early stage, only a prominent lump in the groin area. If not treated in time, the hernia can gradually increase in size, eventually aggravating the damage to the abdominal wall, and may also be life-threatening. Surgical repair is the most effective treatment for inguinal hernia, such as traditional hernia repair, laparoscopic hernia repair, tension-free hernia repair. 2. Lipoma: Considering the abnormal fat metabolism and other causes of inguinal lipoma, usually small painless lumps. If there is no discomfort, usually no treatment is needed, just follow the doctor’s instructions to review; if the lipoma is too large and has discomfort or affects the aesthetics, it can be treated with surgery. 3. Inguinal granuloma: a kind of granulomatous manifestation caused by bacterial infection, the clinical manifestation is mainly a painless nodule in the genital area, and the nodule can grow gradually. Treatment preferred macrolide antibiotics, such as azithromycin; can also choose tetracycline drugs, such as doxycycline; can also choose quinolone drugs, such as ciprofloxacin. It is not excluded that other factors are caused, it is recommended that the patient consult the doctor in time, the doctor to clarify the cause, give targeted treatment, do not blindly self-medication.