The invention provides a driving method and driver circuit for in-cell touch display panel. The method comprises: Step 10: providing a GOA circuit, comprising a plurality of cascade GOA units; Step 20: controlling the n-th stage GOA unit to charge the n-th horizontal scan line of the touch display panel following a preset timing sequence; Step 30: dividing GOA units into first and second types of GOA units, with each first type GOA unit corresponding to a first horizontal scan line at which a next scanning starting after completing a TP scanning, and the remaining GOA units as second type GOA unit; Step 40: the size of first type GOA unit being greater than the circuit of second type GOA unit to provide a greater thrust to corresponding scan line than second type GOA unit. As such, the uneven display phenomenon of in-cell touch display panel is improved.