In the present research, the relationship of social and language Development of 1SI grade girl students has been investigated, with the aim of showing the interrelatedness of these variables and the significant effect of social development on language development. Thirty 1sI grade girl students were selected through stratified random sampling. Results from the administration of Told-p-3 and we inland social development scale showed that there is a significant correlation between social and language development(r=0.59). Correlation coefficients between the language sub skills; listening, organization, speaking, semantic, syntax and social development are respectively 0.51, 0.41, 0.45, 0.47 and 0.58 which is found to be signiticant. Results of t test showed there is no difference between the subjects chronological age and language sub-skills development normative age in 1, 3, 4, 5 and 6 sub-scales. Only in sub-scale 2, subjects lagged behind one year from the normal development age.