Primary English teaching consists of two parts: language knowledge including vocabulary and grammar along with comprehensive language ability concerning listening, speaking, reading, and writing. Currently, there are lots of studies showing the positive effectiveness of gamification on primary English learning in different sections individually. However, few studies integrate these sections and explore the effect of them on an overall scale. The research will comprehensively illustrate the effectiveness of gamification and also investigate how it produces positive outcomes in improving primary school students' English learning based on case studies and systematic reviews. It aims to give an integrated synthesis of research findings which gives educators access to evidence-based insights and offers them valuable guidance for seeking to incorporate gamification strategies effectively into their language instruction. The research design will be distributed into three parts which are vocabulary learning, grammar learning, and comprehensive language ability enhancement to discuss the effectiveness of gamification on English language learning respectively.