Abstract: As early career researchers are pursuers, senior researchers are typically attractors of new collaborative opportunities. Using social network method, we build scientific collaboration network among the National Academy of Sciences members and analyze the strength of cooperation among academicians, which is an important way to understand the evolution relationship of academicians’ collaboration network. In this paper, taking all members of the National Academy of Sciences who are elected as academicians from 2011 to 2015 in biology as an example, using SCI journal papers published by academicians and social network analysis and bibliometric methods, we make quantitative analysis of characteristics of scientific research of weak ties, strong ties and super ties between academicians in scientific research cooperation network. The main results are as follows: weak ties and strong ties are not symmetrical, each academician has at least one strong tie in the scientific research cooperation network, researchers cooperating with distinguished scientists and becoming strong ties with them will accelerate their own scientific research career. Academicians have super ties with each other, the number of co-authored paper between the super ties cooperationship academicians is growing over time, the influence of such papers is higher than papers which are published by academicians who have no super ties relationship between each other. Cooperation research topics show strong consistency and continuity over time and the contribution from both partners is almost equal during their cooperation period.