In this study, we investigate the dynamics of laser-induced bubble pairs with variable relative interval. The bubble pair oscillation process significantly varies with relative interval. For a noncoalesced bubble pair, the oscillation is nearly spherically during the first period, but both of their oscillation processes are prolonged. For a coalesced bubble pair, the smaller the relative interval, the more spherical the bubble shape during its first period. The first oscillation period is longer than that of every single bubble and unaffected by the relative interval when it is less than 0.75. Besides, the evolution of coalesced bubble could still be described by Rayleigh-Plesset model. However, the relative interval of bubble pairs significantly influences the collapse shock wave emission and rebound bubble generation after the collapse of the coalesced bubble. The findings of this study are expected to facilitate the applications of laser-induced bubbles in microfluidic operations, such as rapid mixing and cell sorting.