Pharmacists began preparing drug solutions intraoperatively for postoperative analgesia in the Department of Surgery at Chiba University Hospital from May 2014. To verify the usefulness of pharmacists preparing these drug solutions, we conducted a questionnaire survey among 51 anesthesiologists and received 44 responses (recovery rate 86.3%). Burden on the anesthesiologists was signiˆcantly reduced both temporally and mentally when the pharmacists prepared the drug solutions compared with when the anesthesiologists did (p < 0.01). The anesthesiologists' degree of anxiety about sometimes having to prepare drug solutions alone without any conˆrmation was also signiˆcantly reduced when pharmacists prepared them (p < 0.01), which implies the need for a double-check system. In addition, 88.6% of anesthesiologists said that they were reassured with preparations done by the pharmacists under a sterile environment using a clean bench. Overall, 88.6% of anesthesiologists responded that they were satisˆed with the preparation of drug solutions by pharmacists. Based on the results of this survey, pharmacists' preparation of drug solutions for postoperative analgesia is considered to be useful in ensuring the quality and safety of medical care because it reduced anesthesiologists' work to prepare the drug solutions, allowing them to concentrate on anesthesia and related work, it established a double-check system between the two staŠ teams, and it was done under a sterile environment.