Abstract: Software processes denote a set of interrelated processes in the software life cycle and provide a frame to organize the different factors and issues related to software development activities.The software development’s work products(programs,documentation and data) are produced as consequences of the activities defined by the software processes.Process technologies play an increasingly important role.The major obstacles to their massive deployment include reusability and adaptability.It is addressed the two crucial problems with one solution:process inheritance.It is discussed what process inheritance is.The ideas and mechanisms are implemented in a process description language named SPDL.