Pendulum is the common name for malaria. Malaria is a parasitic disease caused by Plasmodium infection in humans and is transmitted mainly by the bite of female Anopheles mosquitoes. It is clinically characterized by recurrent episodes of intermittent chills, high fever, followed by relief after profuse sweating. Due to the more prominent symptoms of the patient’s chills, malaria is also commonly known as the pendulum. Malaria treatment is usually selected drug therapy, chloroquine is currently the drug of choice for non-drug-resistant malaria, the killing effect on various Plasmodium schizonts, can quickly control the symptoms. Those with high fever can be treated with additional antipyretic and analgesic drugs such as acetaminophen and ibuprofen. Patients who stay in malaria-endemic areas during the malaria transmission season, stay at night, or have a history of blood transfusion within the last 2 weeks, and develop typical clinical symptoms such as periodic chills, fever, and sweating, should seek medical attention promptly and standardize treatment under the guidance of a medical professional.