Clinical Practice Guideline (CPG) is to develop nursing care standard based on the integration of the best research evidence, clinical expertise, and patient's preferences and values. The goal of CPG is to enhance effective and efficient caregiving, and guide nurses to improve quality of patient care. The methods developed in the CPG propose subject selection, scope, systematic review, announcement, advocacy, and effectiveness appraisal and renewal through evidence–based process. It is expected that the development of the CPG could help nurses working in the oncology units understand the framework and contents of the four practice guidelines in this journal.