Patients with shivering and chills usually have the following factors: First, the most common factor is infectious factors, such as fever when the body is infected with bacteria, viruses, fungi and other pathogenic microorganisms mycoplasma and chlamydia, and the body’s heat production increases and heat dissipation decreases when fever occurs. Second, the body shivering and cold is also related to endocrine metabolic diseases, such as hypothyroidism, in the presence of thyroid crisis will appear shivering, accompanied by clinical symptoms of chills and shivering and other clinical manifestations. Third, if drowning occurs in water, either freshwater drowning or seawater drowning, shivering and chills will occur. Fourth, in severe infectious shock, such as septic shock, shivering, chills, high fever, and fine and rapid pulse will occur.