The invention discloses a technology for controlling laser cutting power and speed when a detonating cord is peeled off by laser, and belongs to the field of processing of cord type initiating explosive devices. The technology comprises the following steps of (1) establishing a detonating cord cutting model; (2) according to the cutting model, determining parameters to be confirmed in a laser cutting model by performing a large number of cutting experiments; and (3) under the situation that the moving speed of a laser cutting platform is maintained unchanged, adjusting the power in an on-line manner so as to achieve the best cutting effect. According to the technology disclosed by the invention, the cutting effect of peeling off the detonating cord by the laser can be obviously improved; the detonating cord cutting model is established, the relationship between laser cutting power and the laser cutting speed is coordinated, so that removal of a surround of the detonating cord can be quickly and accurately realized, the flanging of a cutting surface is reduced, and the production efficiency is improved.