This study based on Evaluation the suitable probability distribution for the occurrence pattern of insect pest on green gram (Vigna radiata), the numbers of larvae insects were counted weekly on each plant. The data were taken from an experiment which was conducted by Entomology Department at Breeding Seed Production unit of Plant Breeding and Department, JNKVV Jabalpur M.P. In the experiment there are 3 replications each consist 13 treatments, from each treatment 10 plants were selected randomly and tagged for the recording of the number of major insect pests consists larvae insects (whitefly, leaf hopper, aphid, spodoptera litura and blue butterfly). Thus overall, 390 plants were selected and the data were recorded once in a standard week. Treatment details T1-TM-37, T2- TJM-160, T3- TJM-196, T4- Sikha, T5- PDM-139, T6- TJM-140, T7- Virat, T8- TM-115, T9- TJM-141, T10-TJM-136, T11-TJM-111, T12- TJM-155, T13- TJM-137. The method of proportion of zero and method of moments were found to be suitable for estimating the parameters in the concerned distributions.