Manufacturing method of flexible substrate

The invention provides a manufacturing method of a flexible substrate. The method comprises the steps of: 1, providing a rigid substrate, successively generating a first grapheme layer and a second grapheme layer on the surface of the rigid substrate; 2, forming a flexible substrate on the rigid substrate, the first grapheme layer and the second grapheme layer; 3, carrying out cutting along the edges of the flexible substrate; and 4, separating the first t grapheme layer from the second grapheme layer, and obtaining the flexible substrate retaining the second grapheme layer on the bottom surface. Compared with the prior art, the lossless, mild and high-efficiency peeling between the flexible substrate and the rigid substrate is realized, the second grapheme layer retained on the bottom surface of the flexible substrate has no influences on the flexible substrate, the production cost is effectively lowered, and the yield rate of the production process is improved.