This paper is a review paper introducing environmental formaldehyde monitoring methods,the aim of this review is to promote the studies on environmental formaldehyde in the academic circles.The content of the paper covers the main methods of environmental formaldehyde monitoring at China and abroad,as well as their scope of application.The chemical methods include:acetylacetone colorimetry,AHMT colorimetry,and phenol reagent colorimetry;instrumental methods include:gas chromatography,high pressure liquid phase chromatography,and electrochemical method.At the same time,the sampling and pretreat...