With the coming of blog era,counselors’ blog has become a new carrier for ideological and political education under network environment. This paper analyzes the characteristics of ideological and political education of college counselors’ blog,such as openness,interaction,effectiveness and independence.This paper also illustates the functions of ideological and political education of college counselors’ blog,which includes guiding function,educational function,communicative function and management function. Finally ,this paper puts forward several countermeasures on how to make better use of functions of ideological and political education of college counselors’ blog from the following four aspects:improve counselor's ability to use blog,cultivate blog culture in colleges,intensify the management of counselors’ blog and strengthen the construction of supporting measures.