[目的/意义] 揭示计算机科学领域科研合作发展规律及特点。［方法/过程] 以计算机科学领域1975—2014年约300万篇论文为基础构建合著网，以年为单位分析合著网演化特点，对比分析期刊论文合著网和会议论文合著网的特点。［结果/结论] 科研合作已经成为计算机科学领域的必然趋势和普遍现象，八成以上科研人员拥有两名或两名以上合作者；计算机科学领域的发展以2000年为界分为慢速发展和快速发展两个阶段；会议作为更为高效的科研信息交流方式，更有利于促进计算机科研领域的科学合作

[Purpose/significance]This paper aims at finding out the characteristics of author cooperation in computer science. [Method/process] We built the author cooperative network with about 300 minions of papers from 1975 to 2014, and we analyzed the evolution of this network. We built two networks with papers in journals and papers in conferences, and compared the differences of two types of networks. [Result/conclusion] Co-author is a universal phenomenon, and about 80% scientists have more than three cooperators. There are two stages in computer science, the slowly developing stage before 2000 and the rapid stage after 2000. It is found that scientists are more cooperative in conferences than in journals.