Lasing experiment of inorganic liquid system pumped with laser diode under flowing status is carried out, high repeat frequency laser pulse output is achieved in long time, the maximum single laser pulse energy is 5 mJ and the maximum pumping frequency is 400 Hz. The laser pulse energy is simulated according to the experiment parameters, and the influence of pumping frequency, flowing parameter and environment humidity to the laser output capability are analyzed initially. The experiment results show that the inorganic liquid laser system pumped with laser diode can avoid heat deposition effectively under flowing status and obtain high repeat frequency laser pulse output in long time; the flowing parameter and environment humidity possess very important influence to the laser output, it is very necessary to design the conduit structure excellently and control the environment humidity.