Pharmacists are expected to play major roles as members of diverse perioperative care teams besides implementing medication safety standards, pharmacist’s roles include optimizing drug therapy and other clinical interventions. Yet, developing general perioperative management as another crucial role operation room, pharmacists play and incorporating it into pharmaceutical education would be important. Enriching perioperative care provided by pharmacists can contribute toward improving the clinical competence of these professionals. Presently, there are no pharmacists in Zawia who participate in perioperative care. The objective of this study was to assess the pharmacist's knowledge of general anesthesia and drugs used to anesthetize patients who suffer from hypertension. A cross-sectional study was conducted in Zawia City, Tripoli in 2023. A self-designed questionnaire was distributed to 100 pharmacists. The study found that more than half of the pharmacists have humble knowledge about the drugs used in anesthesia, the findings indicated weakness in their information about drugs used to manage hypertension in surgery, and 36.0% know that sodium nitroprusside is used to control blood pressure during the operation. In conclusion, this study reported that some of the study's pharmacist participants had weak points that contributed to a high percentage of incorrect knowledge. These weak points may be attributable to poor educational preparation or a lack of training before the pharmacists began working in hospitals.