English, as a globally prevalent language for communication, holds significance in various spheres of life. Language acquisition, contingent on the linguistic milieu, especially in the sociocultural context, is profoundly influenced by familial factors. Both domestic and international studies have underscored the considerable impact of family background on students' English language acquisition. This paper aims to delve into the influence of family background on English language acquisition, with a specific focus on three pivotal aspects: family circumstances, parental cultural competence, and the home environment. This examination aims to provide readers with a comprehensive insight into the pivotal role that family background plays in shaping linguistic proficiency. Research findings underscore that family circumstances, encompassing socioeconomic status and access to educational resources, exert a significant influence on English language acquisition. Furthermore, parental cultural competence, which encompasses their educational attainment and exposure to the English language and culture, assumes a crucial role in this process. In addition, the familial atmosphere, inclusive of parental involvement, encouragement, and support, significantly impacts children's motivation and attitude toward English language learning. To optimize language acquisition, it is imperative for families to acknowledge the importance of their background and actively engage in efficacious educational practices. Recommendations encompass creating an English-rich environment within the home, exposing children to diverse English learning resources, nurturing a positive disposition toward learning, and encouraging regular English practice and communication.