Red lumpy scars on the chest are caused by collagen overgrowth during the skin healing process, which leads to massive connective tissue proliferation and hyaline degeneration. Patients can remove it through medication, physical therapy and surgery. 1. Medication: Patients can take local closed injection of drugs such as Triamcinolone acetonide or compound betamethasone, which can stop the extension of scars and reduce the size of scars. In addition, you can also use topical retinoic acid ointment and inject 5-fluorouracil into the lesions. 2. Physical therapy: patients can use fractional laser, cryotherapy or photodynamic therapy under the guidance of the doctor and other physical therapy modalities, which can play a role in relieving the red bumps scars. 3. Surgery: For larger red bump scars, patients can take surgical treatment. Surgical excision, skin grafting or flap transplantation are often used. All of the above drugs should be used under the guidance of a doctor, patients should not use on their own, so as not to delay the condition. Patients with red pimple scars on the chest should go to the hospital in time, under the guidance of the doctor for regular treatment.