Background: The effect and safety of atropine on delaying the progression of myopia has been extensively studied, but its optimal effect dose is still unclear. Therefore, the purpose of this meta-analysis is to systematically evaluate the safety and effectiveness of atropine in controlling the progression of myopia, and to explore the relationship between the dose of atropine and the effect of controlling the progression of myopia. Methods: This work was done through the data search from PubMed, MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials. The Cochrane Handbook was also used to evaluate the quality of these included studies. In addition, a meta-analysis was performed using Revman5.3 software. Results: A total of 10 randomized controlled trials (RCTs) were included. Myopia progression was mitigated greater in the atropine treatment group than the control group, with MD = -0.80, 95% CI (-0.94, -0.66) during the whole observation period. There was a statistical difference between 0.05%, 0.5%, and 1.0% atropine (P = 0.004). In addition, less axial elongation was showed, with MD = -0.26, 95% CI (-0.33, -0.18) during the whole observation period. Conclusion: The effect of atropine in controlling the progression of myopia was dose related. A 0.05% atropine was likely to be the optimal dose.