In this research, the variations of rip density (RD) was investigated in different conditions of wave and bed in the intermediate beaches by a laboratory model. The present research tests was carried out in seven stages with the implementation of the first coastal system as the longshore bar and trough (LBT) in the experimental flume of the soil conservation and watershed management research institute. Then the results were compared with other field observations and laboratory tests and showed a good agreement. In the main results of this study, it was revealed that the wave height parameter is the most effective parameter on the value of rip density in the beach length. In fact, the rip spacing increases with increasing wave height, so that it eventually becomes infinite and the beach approaches dissipative state.