The invention discloses a stress relief blasting method based on a tunnel face notching. The method has the advantages that on the basis of a traditional notching blasting method and a traditional stress relief blasting method, the single hole arrangement is not needed, original tunneling blasting holes are subject to proper re-arrangement and deepening, and a tunnel face with an elliptical surface and an arc-shaped blasting and loosening area are blasted, so a new construction technology is formed, namely that the stress relief and the tunneling excavation are synchronously performed, and strain energy stored by surrounding rock self is sufficiently utilized; the method can be widely applied to the deep tunnel excavation in the fields of mines, water conservancy and hydropower, transportation and the like under the high ground stress condition, or the active control on strong rock blasting in the deep mining process, the rock blasting control effect is effectively improved, and the application prospect is broad.