In today’s digital era, where social media has become a platform for personal expression and professional branding, code-mixing is a widespread linguistic phenomenon. This study investigates the types and factors of code-mixing used in Instagram videos by parenting influencer @dhannicha. Based on Muysken’s (2000) theory, which categorizes code-mixing into three types: insertion, alternation, and congruent lexicalization. The research identifies all three types in the videos, along with four influencing factors: psychological, social, linguistic, and cultural-contextual. Muysken’s theory explains how bilingual speakers combine elements from two languages in different structural ways during communication. The findings reveal that insertion is the most frequently used type of code-mixing, while the social factor is the most dominant factor influencing its use. This suggests that code-mixing in @dhannicha’s videos is often driven by social interaction and audience engagement, rather than random language use. These findings contribute to the field of sociolinguistics by illustrating how language choice on digital platforms reflects social dynamics and identity construction in online communication.