The invention discloses a pure plant traditional Chinese medicinal preparation for treating myocardial infarction and cardiovascular diseases and a preparation method thereof. The preparation comprises the following traditional Chinese medicinal components by weight: 6-15g of codonopsis pilosula, 6-15g of astragalus membranaceus, 6-15 parts of ligusticum wallichii, 8-15g of liquorice, 8-15g of pseudo-ginseng and 50-150ml of gingko leaf extract. The preparation method comprises the following steps: quenching the traditional Chinese medicinal materials for about 4 hours according to the requirement on dosage and quantity; uniformly stirring, adding the gingko leaf extract, and mixing; pouring the mixture in a traditional Chinese medicament extraction bag, putting the bag in a high-pressure kettle, and gradually heating to 105-115 DEG C; cooling to 100 DEG C in the high-pressure kettle, sealing and filling the liquid medicine into a finished product with 50-100ml in each bag to obtain the solution preparation; and storing at normal temperature. The pure plant traditional Chinese medicinal preparation can be used for improving micro-circulation of a human body, eliminating oxygen radicals, remarkably increasing the heart coronary blood flow, remarkably promoting brain blood circulation, increasing brain blood flow rate and regulating blood fat, so that the blood viscosity can be reduced, blood circulation can be improved, and the aging process of a human body can be delayed. The pure plant traditional Chinese medicinal preparation adopts pure plant traditional Chinese medicinal materials, is restrict in formula, mild in action, low in cost and small in dosage, gradually plays drug effects, and does hurt the liver or kidney of a patient.