In order to strengthen the preliminary research and technical reserves of national ecological environment monitoring standards, improve the quality and efficiency of the revision of ecological environment monitoring standards, and standardize the pre research work of ecological environment monitoring standards, the Ecological Environment Monitoring Department of the Ministry of Ecology and Environment has organized the formulation ofDetailed Rules for Pre research of National Ecological Environment Monitoring Standards (Trial)This document specifies the procedures, content, time limits, and other requirements for the pre research work of national ecological environment monitoring standards, and is applicable to the management of the entire process of pre research work.