A touch drive circuit, a touch assembly, a touch drive method, and a display touch device. The touch drive circuit is configured to drive an OLED touch panel. The touch drive circuit comprises a touch chip (10) and a regulating voltage generating circuit (50). The touch chip (10) comprises a first voltage generating circuit (11). The first voltage generating circuit (11) is configured to generate a first voltage signal, the first voltage signal being provided to a transmitter electrode (15) of the OLED touch panel. The regulating voltage generating circuit (50) is configured to generate a regulating voltage, the voltage polarity of the regulating voltage being the same as the polarity of a cathode voltage loaded by a cathode (100) in the OLED touch panel, and the regulating voltage being provided to the transmitter electrode (15). The touch drive circuit reduces the quantity of electric charge flowing from the transmitter electrode (15) and a receiver electrode (25) to the cathode (100), thereby improving the touch performance.