The invention provides a touch type key and a detection method therefor. The touch type key comprises a touch key module, a partial pressure transmission module, and a processing module, wherein the partial pressure transmission module comprises three end nodes including an end node 1, an end node 2 and an end node 3; the processing module comprises three end nodes including an end node P1, an end node P2, and a grounding end node; the end node P1 and the end node P2 of the processing module are connected with the end node 1 and the end node 2 of the partial pressure transmission module respectively, and the grounding end node of the processing module is grounded; and the touch key module has one end node 4 connected with the end node 3 of the partial pressure transmission module. The touch type key provided by the invention is realized through a most basic component, and has the advantages of low cost, strong anti-interference ability, simple peripheral circuit, good use easiness, simplicity in operation, and long service cycle.