The process of learning requires teaching material as a reference. Sociolinguistics material is very important to be understood by students, what is really needed at this time is learning media that can be used by students independently which includes all explanatory material and for that this research was made. This research only focuses on how to develop the Sociolinguistics E-Module Based on Problem Based Learning: Code Mixing Learning’s Topic, and to know the feasibility and practically of E-module. This research used ADDIE method (Analyze, Design, Development, Implementation, and Evaluation). This research was tested on 15 Mulawarman University English language study program students class of 2021. The results of this e-module validation by material experts were 74.54% (feasible), media experts 76% (feasible), and students response 82.54% (very practically). The results of this research; are a Sociolinguistics E-Module based on Problem Based Learning, especially on the topic of Code Mixing which is suitable for use and practical for students in the independent learning process.