Objective To explore the effect of acupuncture quantity on muscle tension and gross motor function in children with cerebral palsy. Methods From January 2017 to November 2019, 78 children with cerebral palsy who were treated in our hospital were collected. 78 children with cerebral palsy were randomly divided into two groups. The conventional acupuncture group (39 cases) were treated with general treatment and conventional acupuncture points. And the more-needle acupuncture group (39 cases) were treated with adding another 13 more acupuncture points. Muscle tension and gross motor function were compared between the two groups after three courses of treatment. Results After three courses of treatment, the muscle tension score of the conventional acupuncture group was slightly lower than that of the more-needle acupuncture group, and the gross motor function scale (GMFM-88) score was slightly lower than that of the more-needle acupuncture group, but the difference was not statistically significant (P>0.05). Conclusion Acupuncture therapy can effectively assist the treatment of children with cerebral palsy, but increasing acupoints may not improve the muscle tension and gross motor function of children with cerebral palsy.