Intermittent chills are one of the symptoms of malaria, an infectious disease caused by Plasmodium, characterized by intermittent chills, high fever, sweating, and splenomegaly and anemia. Cutting off the transmission route is mainly to eliminate Anopheles mosquitoes and prevent them from biting. Removal of Anopheles larvae breeding sites and use of insecticidal drugs. Personal protection can apply repellents or mosquito nets to avoid being bitten by mosquitoes. Control the source of infection, sound epidemic reporting, eradication of malaria patients and malaria parasite carriers. Intermittent chills check items: 1, blood routine blood routine is the most general, the most basic blood test. The routine blood test is the most general and basic blood test. The routine blood test usually takes peripheral blood, such as the blood of fingertips and earlobes. After the blood cell analyzer, the computer reports the results, and this program has become a routine for checking patients. Blood consists of two major components, liquid and tangible cells, and the routine blood test examines the cellular portion of the blood. Blood has three types of cells with different functions – red blood cells (commonly known as erythrocytes), white blood cells (commonly known as leukocytes), and platelets. Diseases are determined by observing changes in numbers and morphological distribution. It is one of the common auxiliary tests for doctors to diagnose the disease. 2.Blood test Blood test is generally taken from peripheral blood, such as fingertips, earlobes area of the blood. After the blood cell analysis instrument, the computer reports the result. The purpose is to check whether there are any abnormalities in the blood. Anyone can be tested. 3.Testing Plasmodium antigen Plasmodium antigen can be detected in those who have protozoaemia, so it can be used for clinical diagnosis of patients with the current disease as well as for checking the source of infection from the population and evaluating the efficacy of the treatment. The main methods are agarose diffusion test, convection immunoelectrophoresis, enzyme-linked immunosorbent assay, direct fluorescence or enzyme immunostaining method, etc.; 4. Detection of malaria parasite antibody can be used in epidemiological investigation to trace the source of the infection; with the help of determining the level of antibody of the populations in the endemic areas to infer the trend of malaria epidemics; to screen the blood donors in order to prevent malaria transfusion infections and to assess the effectiveness of anti-malaria measures. In addition, malaria antibody testing can help to diagnose multiple episodes of unexplained malaria. The more commonly used methods for detecting antibodies include the indirect fluorescent antibody test, the indirect hemagglutination test and the enzyme-linked immunosorbent assay.