If the transplantable hair follicles in the hair provision area are sufficient, there is generally no need for surgical intervals between hair transplants in different parts of the body; if the amount of hair follicles in the hair provision area is insufficient, the hair follicles in the hair extraction area are affected by the recovery of the hair follicles, and other factors, and it is necessary to take an interval of about 3 to 9 months. 1. Recovery of hair follicles in the hair extraction area: when hair transplanting in different parts, if hair follicles are extracted from different hair extraction areas, there is no need for interval hair transplantation. But if you need to transplant hair follicles in the same hair extraction area, you should wait for the wound in the hair extraction area to heal, and then transplant after the scar tension is stabilized, and the transplantation interval will be different for individuals with different hair follicle recovery conditions, and it will take about 3-9 months. 2. Hair transplantation methods: common hair transplantation methods include FUT technology (stripping method), FUE technology (no-scar hair transplantation), etc. Among them, FUT technology is minimally invasive. Among them, FUT technology is minimally invasive hair transplantation, which will leave a tiny scar in the hair transplantation area and requires 3-9 months of recovery time. Other techniques such as FUE are non-scarring hair transplants, which generally do not leave scars in the extraction area, and if there are enough hair follicles, there is no need for spacing. In summary, different parts of the hair transplant, the specific interval by the transplantable hair follicles is sufficient, hair follicles in the extraction area recovery, hair transplantation method and other factors, it is recommended to choose a formal organization to do a good preoperative examination, to determine the hair transplant program.