In the component-based software development method

component model is the basis and domain variability feature is the critical factor.From this

on the basis of the existing component model

this paper proposed a new concept

abstract component concept

which can be used to express a set of components that have domain commonness and domain variability.The corresponding techniques such as component description language

component composition and component management was also discussed.This variability-supported component model was called JBCOM/E

which had the ability to describe domain variability.At the end

a case-study example

POS Domain Software Development Platform

was demonstrated.It can be used to make new POS systems quickly through the above techniques.Sum up the above

aimed at domain variability

this paper did research on variability-supported component model

component composition and component management.It provides a more consistent and integrated technical basis for component-based software development method.