Online learning mode is a learning state on the background of technology development,which deepens its connotations.This thesis clarifies connotations of online learning,elearning,mobile learning from the perspective of concept research network in the way of coword analysis and factor analysis.The conclusions are that: online learning emphasizes study itself and focus on learning elements,which is an embryo of e-learning.E-learning emphasizes application,which is a kind of collaborative learning based on constructivism and a learning system applied to education practice and enterprise training.Mobile learning emphasizes mobility,which has a high demand in deepening its connotation and promotes the development of ubiquitous learning and lifelong learning.