Face fat body thin mainly due to the following reasons: related to genetic factors, puberty and other physiological factors, muscle relaxation, facial swelling, too much cortisol. 1. Heredity: related to personal constitution, not a disease. 2. Physiological factors: before and after puberty, women tend to hoard fat in the face. This phenomenon does not belong to pathological changes, only due to the endocrine causes of puberty fat disproportionate distribution of phenomena, through puberty, through exercise can be restored to normal. 3. Muscle laxity: muscle laxity, aging can also cause the face to look bloated, this situation can choose to eat more vitamins containing fruits and vegetables, more vitamins, protein, and strengthen the exercise. 4. Facial swelling: poor lymph circulation or blood circulation, so that the body’s ability to metabolize water weakened, resulting in facial swelling phenomenon. The first thing to do in this case is to ensure regular sleep, do not drink alcohol before going to bed, do not eat salty food, and take a bath with warm water to reduce water retention in the body. 5. Excessive cortisol: long-term massive application of hormones or adrenal disease leading to hypercortisolism, can lead to a full moon face, slender limbs. Face fat body thin may also be due to other reasons, it is recommended to seek medical attention in a timely manner, after discharging the genetic and rational factors, follow the doctor’s instructions to deal with.