The manifestations of heart failure grade I, II, III and IV are based on the New York Heart Association’s grading method. Grade I usual activities are not limited, Grade II daily activities are mildly limited, Grade III light physical activity is significantly limited, and Grade IV can not carry out any physical activity, and the resting state will also have heart failure manifestations. 1. Patients with Grade I heart failure usually have no obvious symptoms in daily activities, but may have symptoms such as panic, chest tightness, fatigue, dizziness and so on when they exercise strenuously or have too much activity. 2. Patients with heart failure level 2 may have symptoms such as panic, dizziness, dyspnea, chest tightness, and fatigue when they are in the usual state of daily activities, such as climbing 2-3 floors of a building, or walking on level ground for about 1 kilometer, and may have these symptoms. 3. Patients with heart failure at level 3 may experience symptoms such as panic, chest tightness, dyspnea, dizziness, and fatigue if their activity level is less than their daily activity level. For example, patients may experience these symptoms if they climb one floor of a building or walk 500 meters on level ground. 4. Heart failure grade 4 patients, usually almost can not carry out any physical activity, in the state of rest will also have heart failure symptoms, especially the left heart failure patients can not lie down, appear sitting breathing. The performance of the four levels of heart failure is different, but to determine the level of heart failure, you need to further go to the hospital, combined with the patient’s symptoms and laboratory tests to comprehensive analysis.