A touch module and a manufacturing method thereof, and a touch screen are provided. The method of manufacturing a touch module includes: forming a composite electrode, a lead, and a lead pad each of which has a stacked structure of a transparent conductive layer and a metal layer on a substrate by one patterning process, the touch module including a touch area, and a peripheral area and a bonding area located at the periphery of the touch area, the composite electrode being formed in the touch area, the lead being formed in the peripheral area, and the lead pad being formed in the bonding area; forming a protective layer outside the touch area, and etching away the metal layer of the composite electrode to form a transparent touch electrode.