The cause of high free fatty acids should be tested for patients, divided into physiological and pathological, as follows: i. Physiological: such as hunger, exercise, emotional excitement, can lead to high free fatty acids, this kind of high free fatty acids does not require special treatment. Pathological: If the high free fatty acid is caused by hyperthyroidism, it needs to be treated with anti-hyperthyroid drugs. At the same time, high free fatty acids need to improve the blood lipid test, patients need to fasting to check the blood lipid, if at the same time found elevated blood lipid, also need to reduce lipid treatment. The main thing is not to eat fried or fatty foods and to be as active as possible. In case of pathological factors, treatment should be directed at the cause, as mentioned above, if hyperthyroidism, diabetes can also cause, or after the injection of epinephrine, norepinephrine, growth hormone, can also lead to high free fatty acids.