In any medical system, effective treatment of disease hinges upon an accurate, complete diagnosis. This places Bian Zheng, the diagnostic system of Traditional Chinese Medicine (TCM) and Traditional Chinese Veterinary Medicine (TCVM), as the most important part of medical practice. There are at least eight Bian Zheng systems which include: Eight Principles, Zang-Fu Patterns, Six Channel Patterns (Six Phases), Four Stages (Four Levels), San-Jiao Patterns (Triple Heater Patterns), Pathogen Patterns, Qi-Blood-Body Fluid Patterns and Meridian Patterns. These often present a challenge for students to learn and the novice TCVM clinician. Is there a simpler and easier method to achieve Bian Zheng? On the basis of 30-years of clinical practice and teaching experience, the author has created the 2 W TCVM Diagnostic System which simplifies TCVM Pattern diagnosis for clinicians.