< 0.001) and decreased pethidine consumption (17.2 ± 7.0 vs. 76.3 ± 17.4 mg) (p < 0.001) were observed in the TEA group than in the GA group, respectively. A worse visual analog scale (VAS) pain score was observed in the GA group (5.7 ± 0.6) than in TEA patients (4.3 ± 0.4) (p < 0.01). The average bed rest time was significantly shorter in the TEA group (16.9 ± 0.9 hours) (p < 0.01) than in the GA group (27.1 ± 4.1 hours). Overall satisfaction scores were significantly higher in the TEA group (4.4 ± 0.1) (p < 0.01) than in the GA group (3.5 ± 0.2). Side effects were observed at a higher frequency in the GA group (16/32) (p < 0.0001) than in the TEA group (3/32). The frequency of pethidine injection for pain relief was significantly lower in the TEA group (8/32) (p < 0.0001) than in the GA group (24/32). The total hospital cost (NT 64,392 ± 3,523 vs. NT 53,806 ± 2,817) (p= 0.0342) and anesthesia cost (NT 7,968 ± 246 vs. NT 5,268 ± 262) (p < 0.0001) are also significantly lower in the TEA group than the GA group. In conclusion, TEA provided better postoperative pain relief and recovery and lower cost than GA for MRM surgery.