The invention provides a method for evaluating the influence of parent rock on reservoir physical properties. The method comprises the following steps of: 1) selecting a representative rock sample according to the rock type distribution of a target reservoir and cutting into a block shape; 2) placing the rock sample into a hanging basket of a reaction kettle, adding an acid liquid and sealing; 3)carrying out temperature programming to target temperature and pressure and reacting for 36-72 hours at the constant temperature and under constant pressure; and 4) after completing the reaction, naturally cooling the reaction kettle, taking out the sample and analyzing, wherein the shape of the rock sample after cutting is one of a cube, a cuboid or a cylinder. The method has the beneficial effects that a new idea is provided for the analysis of the influence of the parent rock on the reservoir physical properties; and a foundation can be laid for the exploration of high-quality reservoirs byutilizing data of rock debris types and contents and the like in the research area and by combining with the actual temperature and pressure conditions.