This review discusses recent advancements in chemical sensors for detecting toxic materials. The article highlights the importance of chemical sensors in monitoring toxic substances due to their potential health and environmental risks. Various types of chemical sensors, including optical, electrochemical, and biosensors, are reviewed, emphasizing their roles in detecting toxic materials. The review focuses on the development of new sensor technologies and their applications in environmental monitoring. It discusses the principles of chemical sensors, their components, and how they function to detect toxic materials. The review also covers recent trends in biosensors for toxic material detection, including the use of biomolecules such as enzymes, proteins, and living cells as sensing elements. The article emphasizes the importance of improving sensor performance through interdisciplinary research and the integration of advanced technologies. It concludes that chemical sensors play a crucial role in detecting toxic materials and that further research is needed to enhance their capabilities for effective monitoring and protection of human health.This review discusses recent advancements in chemical sensors for detecting toxic materials. The article highlights the importance of chemical sensors in monitoring toxic substances due to their potential health and environmental risks. Various types of chemical sensors, including optical, electrochemical, and biosensors, are reviewed, emphasizing their roles in detecting toxic materials. The review focuses on the development of new sensor technologies and their applications in environmental monitoring. It discusses the principles of chemical sensors, their components, and how they function to detect toxic materials. The review also covers recent trends in biosensors for toxic material detection, including the use of biomolecules such as enzymes, proteins, and living cells as sensing elements. The article emphasizes the importance of improving sensor performance through interdisciplinary research and the integration of advanced technologies. It concludes that chemical sensors play a crucial role in detecting toxic materials and that further research is needed to enhance their capabilities for effective monitoring and protection of human health.