This study investigated the dosimetric results and gamma passing rates of jaw-automated tracking (JAT) techniques in volumetric modulated arc therapy (VMAT) plans for patients with multiple brain metastases. From August 2017 to March 2020, 15 patients with multiple brain metastases were enrolled in this study at Yunyang People's Hospital. For each patient, a VMAT plan was created using both the JAT and jaw manual fixed (JMF) techniques. Plan quality was evaluated by comparing the conformity index (CI), homogeneity index (HI), and dose to organs at risk, including the whole brain and brainstem. Evaluation indicators and dose distributions were compared between the JAT and JMF groups. The results indicated that the JAT plans demonstrated better HI (0.060 vs. 0.080, p < 0.05) and a lower mean dose for the whole brain (853.8 cGy vs. 893.4 cGy, p<0.05). Additionally, the JAT plans exhibited reduced dose exposure in V₁₀ (56.1% vs. 60.2%, p < 0.05) and V₂₀ (28.5% vs. 29.5%, p < 0.05) compared to the JMF plans. No significant differences were observed between the two groups in terms of CI and maximum dose to the brainstem. In conclusion, VMAT plans utilizing JAT techniques can enhance HI and decrease dose exposure to the entire brain.