A manufacturing method of an array substrate, an array substrate and a display apparatus are provided. The manufacturing method includes: providing a base substrate; sequentially forming an active layer and a first insulating layer that covers the active layer on the base substrate; performing one patterning process on the first insulating layer, so as to form a first through hole and a second through hole that expose the active layer in the first insulating layer, and form a first recess at a surface of the first insulating layer; forming a conductive layer on the patterned first insulating layer, with the conductive layer being filled in the first through hole, the second through hole and the first recess; conducting a grinding process to form a source electrode, a drain electrode and a pixel electrode are formed respectively.