The invention relates to the technical field of laser, in particular to a volume Bragg grating (VBG) high-energy pisosecond laser. The laser disclosed by the invention comprises a box, wherein two parallel VBG end mirrors are separately arranged at the two ends of the interior of the box to form an optical resonant cavity, an electro-optical switch, a polarizing film, a saturable absorber, a gain pumping module and a concave lens are sequentially arranged in the optical resonant cavity, the gain pumping module is used for strong pumping on a laser crystal to generate oscillation light, the oscillation light is gradually compressed to a short pulse under the effect of the saturable absorber, and meanwhile, the pulse with is further compressed under the effect of the VBG end mirrors. At the maximum pulse energy moment, high voltage is applied to the electro-optical switch, high-energy pisosecond pulse is output through the polarizing film and a full-reflection mirror by a cavity dumping technology to obtain high-energy pisosecond pulse laser, and thus, the problems of large size, device complexity and low stability of the high-energy pisosecond laser at the current stage are solved.