The international communication of museums is an important way of to realize the dream of "Chinese Culture Going Out".At present,online museum has become a beneficial supplement to the traditional museum.Since "Zhang Daqian" is viewed as a well-known cultural card for Chinese paintings,so the translation and communication of Zhang Daqian's exhibited paintings is a reflection of local museum exhibits translation.The paper firstly discusses the basic principles that the translation and communication of museum exhibits should abide by from the perspective of communication studies.It then points out the two weaknesses of the current translation the inappropriate contents to be translated and communicated,and the insufficient use of the mediums.It lastly puts forward corresponding measures based on the translation of Zhang Daqian's paintings in the online museums.This research may promote the positive effect of online museums in the international communication of Chinese culture.