Based on a detailed analysis to the process of scientific communication under the context of digitalization and network, the stakeholders of Altmetrics evaluation are identified under the context of information production, information media and information utilization, and the function needs and evaluation indices for stakeholders of Altmetrics evaluation are discussed from three aspects of research achievement, achievement display and needs discovery ,all of which derived from the new characteristics of scientific communication in the new context. It is found that: the context of digitalization and network provides a new opportunity to enrich the scientific communication and a new reality to expand the theory and practice of scientific and technological evaluation, it is of importance to combine the formal communication and informal communication and to design responding evaluation indicators in Altmetrics evaluation.