The present invention provides a touch display panel comprising a touch driving electrode and a touch sensing electrode, wherein the touch display panel further comprises a signal enhancement layer which is capable of generating electric field lines by coupling with the touch driving electrode and/or the touch sensing electrode. The present invention also provides a display device including the above touch display panel. When the operator's finger touches the surface of the touch display panel, a large amount of electric field lines generated by coupling of the signal enhancement layer are attracted to the operator's finger, thereby increasing the amount of change in capacitance, and the sensitivity of the touch display panel is further improved.