Hair can be made thicker through life adjustment, etiology treatment and hair transplantation. 1. Life adjustments: It is recommended to develop a good work and rest habits, avoid staying up late, ensure enough sleep; light diet, avoid eating spicy, greasy food to reduce the secretion of sebaceous glands of the hair follicles, and eat more fresh fruits and vegetables; to keep the hair clean and dry, avoid using irritating washing and care products, and avoid frequent perming and coloring of the hair. 2. Etiological treatment: immune disorders, seborrheic dermatitis, endocrine disorders, ringworm and other diseases can lead to hair loss, and the appearance of thinning hair, want to become thick hair, you need to actively treat the original disease, when the disease that causes hair loss is under control, the symptoms of alopecia areata can be relieved, with the growth of new hair, the hair can be gradually thicker. 3. Hair transplantation: It is a mature technique to improve hair thinning, which is to take the hair from the donor area together with the skin fat tissue and transplant it to the hair loss area of the scalp, once the transplanted hair survives, the effect can be maintained for a long time. It is recommended that people who want to make their hair thicker should go to a regular hospital to clarify the cause of hair thinning and choose the best treatment plan under the guidance of the doctor.