The invention discloses a single-chip touch panel and a manufacturing method thereof, as well as a touch screen and a touch display device and belongs to the technical field of display. The single-chip touch panel comprises a substrate base plate, wherein a functional layer is formed on a non-visual region of the substrate base plate; a transparent electrode layer is formed on a visual region of the substrate base plate on which the functional layer is formed; the single-chip touch panel further comprises a first glue layer; the first glue layer is formed on the visual region of the substrate base plate on which the transparent electrode layer is formed; the distance from the upper surface of the first glue layer to the substrate base plate is greater than or equal to that from the upper surface of the functional layer to the substrate base plate. The single-chip touch panel is capable of solving the problems of relatively low product yield and relatively high manufacturing cost and realizing the effects of improving the product yield and lowering the manufacturing cost, and can be used for the touch display device.