In the research, nine databases were searched extensively, covering their inceptions to July 28, 2022. Two authors independently sorted relevant studies, and a rigorous quality assessment was performed on selected studies using a well-established risk-of-bias tool for randomized trials. Features of the incorporated studies were laid out in a table, and then a thorough meta-analysis was conducted to examine the impact of acupuncture on attention-deficit hyperactivity disorder symptoms.

The results derived from fourteen selected studies involving 1185 participants showcased acupuncture's efficacy in treating attention-deficit hyperactivity disorder. When used alongside conventional medicine, acupuncture had a notably positive impact on reducing conduct problems, learning difficulties, and hyperactivity symptoms. Moreover, even acupuncture in isolation helped mitigate learning issues, hyperactivity and hyperactivity impulsivity. It further exhibited superior total treatment efficacy than conventional medicine alone. Throughout the trials, no major adverse events were recorded. However, it is significant to mention that the risk of bias in these included studies raised general concerns.