The development of most complex equipment presents the feature of ″main manufacture,supplier″. As the key point of equipment development, reliability growth integrates with the whole manufacturing process and has the character of distribution and collaboration, so the data are always multisource and heterogeneous. In this paper, the early classic reliability growth models and their history are introduced first. Then the latest research progress of reliability growth models under the background of uncertain information is explained, which includes information integration, Bayes inference and virtual prototype technology. At last, by using graphical evaluation and review technique (GERT), grey system theory and probability theory, the reliability growth technology and models of complex equipment under the background of collaborative development are discussed and the future research direction is forecasted.