Abstract: This paper introduces an operation monitoring recorder of epuipment for environment p rotection based on ARM CORTEX2M3 technology. By absorbing key operation of environment p rotection and operation data based on successful transmitter checking technology, real2time online monitoring is successful in monitoring the op2 eration of environment p rotection equipments, whic p rovide effective management basis of p raise and punishment, statistics and decision2making for monitoring department for environment p rotection. This equipment has obvious characteristics with modularization, small volume, operation stability and strong anti2interference.