A new method to analyse liquid drop images based on CCD is introduced in this paper,which overcomes the limitations of fiber and the capacitive drop analysis method,and enhances the discrimination ability of liquid drop analysis technology.The instant liquid drop profile during its growth is monitored by CCD camera real-timely,and the collected images are processed and the feature extraction is realized after image processing.The region area,boundary perimeter,drop length,satiety,circularity,and the profile edge of the liquid drop image are extracted and analyzed with principal component analysis(PCA).The feasibility of image liquid drop analysis technology is proved with experiments.