The invention relates to a metal net electromagnetic touch sensor, a touch module and an electronic touch device. The metal net electromagnetic touch sensor comprises an electromagnetic induction array, the electromagnetic induction array comprises a first-direction metal net set and a second-direction metal net set which are insulated mutually, the first-direction metal net set is composed of two or more first-direction metal nets which are mutually parallel, and the second-direction metal net set is composed of two or more second-direction metal nets which are mutually parallel. Extremely fine metal nets which cannot be directly distinguished with the human eyes are adopted as the metal nets forming the electromagnetic touch sensor, the touch module is directly arranged at any position of the surface of a display screen of an electronic device with the display screen, can be arranged at the position between display screen glass and back light and also can be arranged on the back face of the back light of the display screen, and the structural design is convenient and simple, low in cost and convenient to apply and popularize; due to the fact that the electromagnetic touch sensor is made of the metal nets, the resistance is low, the signal to noise ratio is very high, and the electromagnetic touch sensor can be applied and popularized to touch products with the larger size.