Fat grain refers to the cornu rashes, the removal of fat grain can usually use aseptic needle pricking method, carbon dioxide laser treatment and other methods to remove fat grain, different patients with different physique, different sensitivity to the treatment, there is no the most effective way to remove. 1. Aseptic needle pricking method: If the number of fat grains is not much, you can go to the hospital and use the aseptic needle to pick out the contents of the fat grains under the routine operation of the doctor. 2. Carbon dioxide laser treatment: If the fat grains are solid and difficult to be picked out with a sterile needle, the patient can go to the hospital for carbon dioxide laser treatment to remove them. Carbon dioxide laser treatment may leave pigmentation or scars. Usually, fat grains have little effect on the body, and if they have no effect on the appearance, patients may not need treatment. If treatment is needed, please consult the hospital in time and choose the appropriate treatment method under the guidance of the doctor.