The Informal Learning refers to the way that one learns outside the formal school and continuing education in informal time and place such as daily life,work,and social communication and so on.It takes up more than 80% of all the knowledge which one learns.Because of the important role of informal learning in study,people pay more and more attention to it,and how to carry out better informal learning has been a matter of concern.Mblog,as a new-emerging mobile internet work business,has the characteristics of instant,mobile,personal,convenient and so on.So it is very suitable for informal learning.This paper expounds characteristics of the connotation of Mblog,analyses at Mblog on the advantages of informal learning,and promotes the research of informal learning based on the Mblog.