The purpose of this research is to observe the current standing and effectiveness of alcohol use disorder (AUD) diagnostic assessments by reviewing research into transitions in the disease concept and assessment of AUD. It also aims to use these insights to obtain an effective perspective to better understand and support AUD patients. Currently screening tests are the most widely used methods in discerning whether a patient has AUD. With regard to AUD assessment methods, extensive research is being conducted on the Rorschach Test and Thematic Apperception Test as alternatives for effectively diagnosing AUD. In particular, the sign approach under the Rorschach Test has been shown to be an effective alternative, and many studies have assessed method. However, researchers have not yet determined consistent attributes of or signs to discern AUD under this approach that could be used in assessments with an acceptable degree of confidence; therefore, many studies are now shifting toward more quantitative methods in diagnosing AUD.