The invention is applied in the technical field of touch screens, and provides a method and a system for making a touch controller adaptive to a capacitive touch sensor. The method comprises the following steps of: A, detecting and sampling a capacitive element in a sensor model identification circuit and resolving the sampling data by the touch controller; and B, selecting parameters corresponding to the type of the sensor according to the resolving result in the step A to perform touch detection processing by the touch controller. According to the technical scheme, the method is simple and easy to implement and low in cost and can be applied to various digital products adopting capacitive touch screens, so that the replacement of touch panel modules of different models or provided by different providers in the production link and the maintenance link becomes easy, and ideal touch detection effect can be obtained.