The invention relates to the field of planting, in particular to a peach seed selection method. The peach seed selection method uses a seed selecting device to perform peach seed selection. The seed selecting device comprises a first conveying belt, a second conveying belt, a separation cylinder and a collecting cylinder, wherein the first conveying belt is provided with screening holes, and the separation cylinder is arranged on the second conveying belt; the separation cylinder comprises an inner cylinder and an outer cylinder, the inner cylinder is provided with a through hole and an opening, the outer cylinder is provided with an outlet, a retaining piece is arranged outside the inner cylinder and connected with the inner cylinder, and an electromagnet is fixed in the inner cylinder; the outer cylinder is connected with the first conveying belt, and a rotating motor is fixed between the outer cylinder and the inner cylinder; the outer cylinder is communicated with the collecting cylinder, the collecting cylinder is provided with a piston and a control switch, the control switch can turn on and turn off the electromagnet, the collecting cylinder is provided with a discharge outlet, and a discharge switch is arranged outside the discharge outlet; a good seed collecting tank, a bad seed collecting tank and a pulp collecting tank are arranged below the second conveying belt. The peach seed selection method includes the steps of firstly, cleaning; secondly, selecting seeds; thirdly, planting; fourthly, repeatedly selecting seeds. By the method, peach optimization can be performed constantly according to local environments.