This paper presents an organizational entity capabilities based software process modeling method (OEC-SPM), aiming at the particularities of software process, it defined the organizational entity with certain capabilities as the core element and the basic unit in the modeling process—process-agent. Process-Agents produce concrete software development processes and production processes according to the goals, the knowledge, the experiences and the capabilities under the defined project goals and constraint environment, through the proactive as well as autonomous reasoning on behaviors to provide effective supports and proper decisions to software project development. The method, owing to its full consideration on capabilities of process executors accomplishing goals when the software processe is being constructed, makes the established processes have good predictability and satisfy the premises for processes' stable executions, resolving the problems of instability and uncontrollability of the software process radically.