Abstract: An explosion-proof lamp with a heat dissipation mechanism includes a lamp base, a heat dissipater and a lighting module. The heat dissipater further includes a heat dissipation body having a foundation and a column block extended from the foundation; wherein the cross-sectional size of the foundation is greater than the one of the column block. A fastening means is provided between the foundation and the lamp base such that the foundation is fastened onto the lamp base via the fastening means. The lighting module is secured onto the column block. With such novel design, the heat dissipation effect of the explosion-proof lamp is advantageously improved.