This study explores the effectiveness of online Chinese language courses, focusing on the development of listening comprehension and Mandarin pinyin pronunciation skills among Chinese language students at the Faculty of Education, Uttaradit Rajabhat University. Utilizing a systematic approach, the research employed a pre-test and post-test design to evaluate the impact of the instructional methods on students' language abilities. Significant improvements were observed in both listening comprehension and pronunciation skills post-intervention, as evidenced by statistical analysis. Moreover, the study gauges students' satisfaction with the online learning experience, revealing high levels of contentment regarding course content, accessibility, and instructional delivery. The research outcomes have demonstrated a statistically significant improvement in the skills assessed. Students' scores in listening comprehension and Mandarin pinyin pronunciation substantially increased from pre-instruction to post-instruction. Specifically, the average scores in listening comprehension improved from 16.45 to 24.50, while pronunciation scores rose from 10.85 to 16.30, both evidencing significant advancements with a significance level of 0.05. These results underscore the effectiveness of the online Chinese language courses in enhancing students' linguistic capabilities.