The invention relates to a clamping heat radiation method for a laser working matter the structure of which comprises an upper pedestal, a lower pedestal and a heat radiation module; wherein, the heat radiation module and an LD pump module are matched and are staggered up and down as well as left and right to form an indented periodical arrangement structure; moreover, a middle laser medium is clamped by the indented heat radiation module. For the heat generated by the laser medium, despite a radically distributed heat flow or a coaxially distributed heat flow, the indented periodical heat radiation structure can achieve an ideal heat radiation effect; simultaneously, the temperature grads in the laser working matter can be reduced to lead the temperature field in the laser medium to be more uniformly distributed, thereby furthest reducing the harm of thermooptic effect. The energy conversion efficiency can be increased and the light beam quality can be remarkably improved by the method.