The invention discloses a touch drive circuit, an optical embedded touch screen and a display device, wherein the touch drive circuit comprises a light sensitive submodule, a data writing submodule, a drive submodule and a control submodule. Under the control of a scanning signal terminal, the data writing submodule transmits a scanning signal of the scanning signal terminal to the drive submodule; when the drive submodule is controlled to be opened by the scanning signal, the drive submodule outputs a touch sensing signal to the control submodule, and the touch sensing signal is reduced with increasing of light intensity of the light sensitive submodule; and under the control of a control signal terminal, the control submodule inputs the touch sensing signal to a touch signal reading terminal, so that the touch function is realized. Compared with a drive circuit of a conventional optical embedded touch screen, the control submodule is used for controlling the drive submodule to transmit the touch sensing signal to the touch signal reading terminal, and when the touch signal reading terminal of each level of drive circuits is connected with the same touch signal reading wire, signals output by different levels of drive circuits can be prevented from mutual crosstalk.