Goosebumps may be related to external cold stimulation, keratosis pilaris, fever and other reasons. 1. External cold stimulation: the human body by the cold stimulation, through the skin capillaries, vertical hair muscle contraction to reduce heat dissipation, the phenomenon of goose bumps. 2. Keratosis pilaris: an autosomal dominant disease, typically manifested as keratin plugs at the mouth of the hair follicle or keratinized papules consistent with the location of the pores, the skin was “chicken skin-like” appearance. 3. Fever: In the early stage of fever, because the actual body temperature does not reach the temperature set by the fever center, it is necessary to reduce heat dissipation through the contraction of the erector spinae muscle, causing goose bumps all over the body. Full of goose bumps people pay attention to keep warm, such as ineffective, should go to the hospital in a timely manner, a clear cause of the disease, under the guidance of the doctor for standardized treatment.