In laser diode array (LDA) side-pumped module,coupling system with high efficiency and optimized pump distribution is very important. To evaluate different coupling systems,evaluating specifications are put forward. Because different requirements are put on LDA side-pumped modules used in laser oscillator and as amplifiers,different specifications are set up for laser modules and amplifier modules. Calculating results of different pumping intensity distributions of laser modules and amplifier modules show that these specifications can not only show pump depositing efficiency and uniformity of the intensity distribution in the gain modules,but also the matching degree between pump intensity distribution in the laser module and laser oscillating modes.