The proposed system "Cells Analysis System for Microscopic Pap Smear Images (CASMPSI)" gives techniques related to Pap smear microscopic image analysis. Some image processing techniques have been used to detect cell's nucleus area and the surrounding cytoplasm. The system was designed to extract each single nucleus belong to a cell individually, and in case of clustered cells (i.e., cancerous cells) the whole cluster area is extracted as one piece. Two kinds of features are proposed for cell classification they are geometrical and texture features. The common aim of all these techniques is to develop an automated Pap smear analysis system which can help cyto-technician to reduce time they spent for slide examination in Pap screening process.