Aspirin can be used cautiously in elderly people over 70 years old if accompanied by cardiovascular and cerebrovascular diseases, and it is not recommended that elderly people over 70 years old who do not have cardiovascular and cerebrovascular diseases should take aspirin prophylactically. Aspirin is currently the most commonly used drug for antiplatelet aggregation, which can effectively inhibit platelet aggregation by inhibiting platelet activity, and then inhibit the aggregation function of platelets. Cardiovascular and cerebrovascular diseases have different degrees of atherosclerosis, the endothelium of blood vessels is not smooth, easy to cause platelet aggregation, triggering the occurrence of thrombosis, antiplatelet therapy in the treatment of cardiovascular and cerebrovascular diseases has an important role. Aspirin has the side effect of gastrointestinal reaction, long-term oral consumption may also lead to gastrointestinal bleeding, 70-year-old elderly gastrointestinal function is weaker, the risk of bleeding further increase, so aspirin should be used with caution. If there are contraindications such as aspirin allergy, active peptic ulcer, severe hepatic or renal insufficiency, it should not be taken. The Chinese expert consensus on the use of aspirin in the primary prevention of cardiovascular disease states that adults over the age of 70 should not routinely take aspirin for the primary prevention of cardiovascular disease. This was made primarily in consideration of the magnitude of the risk between treatment and side effects. Elderly people over 70 years of age should take aspirin under the guidance of a doctor , do not blindly take the drug, so as not to aggravate the condition.