This document gives general technical recommended practice for operation of the pulverized coal fired boiler in power plants, including startup, shutdown, operation and maintenance, emergence and failure detecting/handling and preventing. This document is applicable to boiler of existing single units with a capacity of 300 MW to 600 MW in thermal power plants, where pulverized coal is combusted to generate electricity and/or to supply heat meanwhile. This document can be used to develop boiler operation code as reference to determine detail operation steps and/or procedures for particular boiler of the plant. Specifications of manufacturer, good experiences from practice and stipulation defined in other related high-level standards/regulations/code should also be matched.