The invention discloses a salvianolic acid micropore osmotic pump controlled release tablet, comprising a tablet core and a coating; the tablet core is composed of salvianolic acid bulk drug, controlled release supplementary material, lubricant and moderate anhydrous ethanol; the weight ratio of the salvianolic acid bulk drug, the controlled release supplementary material and the lubricant is 50:150:1; the coating is composed of cellulose acetate, polyethylene glycol 400 solution and diethyl ester phthalate. In the invention, on the basis of controlling the content of 50-90% of salvianolic acid B, the content of 5-15% of tanshinol, protocatechualdehyde, salvianolic acid C, etc. in raw materials and by the optimal screening of penetrating agent, pore-forming agent, plasticizer and film thickness, an osmotic pump controlled release tablet which releases 85%-95% of a drug for 12 hours and conforms to the release characteristic of zero order kinetics is successfully prepared and used for preparing the drug for treating coronary heart disease and cerebral arteriosclerosis, which is good for the drug to form steady blood concentration in a body and lengthening the effective acting time of the drug, thus having good clinical compliance and treatment quality.