Med-Aid AI Contour is a software applying artificial intelligence (AI) to contour organs at risk (OAR) baseon CT scans. This is a tool to assist oncologists on contouring OAR to reduce time and improve the qualitywith more accurate quality. Purpose: Evaluate the quality of AI Contour and the software’s self-study and self-improve ability whenthe amount of input data is increasing.Materials and Methods: Cases of cancer in different locations include: Head, Chest and Abdominalare used as input data for AI Contour to self-study, and then evaluate contour results based on 60 caseswith contour samples reviewed by doctors. Implement statistics of results when input data for Abdominalincreasing from 125 up to 716 patients.Results: The latest version of AI Contour showed results over 80% contours acceptable. Specifically:the Head area 83.02%, the Chest area 82.69%, the Abdominal/Pelvic area 82.41%.Discussion: AI Contour gives gradual better results when input data increases. For example Abdominalarea, the acceptable rate increased from 52.02% (with the input was 125 patients) to 81.22% (with the inputwas 716 patients)