Objective: To evaluate the therapeutic effect of acupuncture combined with acupoint injection on chronic nonbacterial prostatitis (CNP). Methods: A total of 72 CNP patients admitted between March 2022 and October 2023 were selected. The patients were randomly divided into two groups using a random number table. The combined treatment group (36 cases) received acupuncture combined with acupoint injection therapy, while the control group (36 cases) received conventional Western medicine treatment. The overall efficacy rate, symptom severity, prostatic fluid indicators, incidence of adverse reactions, and recurrence rates were compared. Results: The overall efficacy rate of the combined treatment group was higher than that of the control group (P < 0.05). After 10 days of treatment, the symptom severity score of the combined treatment group was higher than that of the control group, and the prostatic fluid indicators were lower than those of the control group (P < 0.05). The incidence of adverse reactions in the combined treatment group was lower than in the control group (P < 0.05). During the follow-up period of 1–6 months, the recurrence rate in the combined treatment group was lower than that in the control group (P < 0.05). Conclusion: Acupuncture combined with acupoint injection can alleviate CNP disease symptoms, improve prostate function, and prevent post-treatment adverse reactions. It also has a lower recurrence risk and demonstrates excellent efficacy.