Discovering the impact of national language use in L2 learning on the proficiency of learners at degree level was the focus of this research; in order to find out a clear comprehension of the current subject matter, the research aimed at 577 learners who were learning English at graduation level in different public sector colleges and universities of the Southern Punjab, Pakistan. For this study, the researcher used a questionnaire as a data collection tool. The data analysis was done using SPSS (statistical package for social sciences) version 23. The researcher analyzed the data using descriptive analysis, analysis of variance (ANOVA), T-Test and Cronbach's alpha. The findings of the present research depicted that the students exhibited extremely positive and constructive perceptions regarding the use of national language in the second language classroom. The majority of the respondents gave preference using Urdu in specific situations for enhancing their proficiency in specific reasons such as while discussing course policies, learning about grammar and its usage in L2 classroom, attendance, and other administrative information.