A manufacturing method for a display panel based on BOA technology is disclosed. The method includes an array substrate, wherein, the array substrate includes a display region and a non-display region; forming a color photoresist layer and a black matrix layer on the array substrate, and in a process of forming the color photoresist layer and/or the black matrix layer, forming a spacer simultaneously. A display panel based on BOA technology is also disclose. In the processes of forming the color photoresist layer and/or the black matrix layer, forming the spacer simultaneously to reduce a process for individually forming the spacer such that the manufacturing processes of the display panel are reduced to decrease the production cost.