Hydrogen peroxide (H 2 O 2 ) plays an important role as an intermediary in different biological, chemical and environmental systems.It has been widely used as an oxidizing and antimicrobial agent, in germicides production and textile and paper bleaching.However, it is well known, that H 2 O 2 is a possible responsible in many diseases and is a chemical agent that threatens the environment, so it becomes important to detect peroxide with high accuracy.In this study, carbon paste electrode (CPE), modified with Co 2 SnO 4 was synthesized and tested.It was successfully obtained a non-enzymatic H 2 O 2 detection type sensor, based on Co 2 SnO 4 / CPE composite, showing good linear response in concentration of H 2 O 2 in the range of 88 -605.9 µM.