Unani scholars of different eras had depicted the theory of temperament. Everything which exists physically has a particular distinctive temperament, the normalcy of this required temperament keeps someone on perfect functioning and deviation results in a disorder of his/her work. Classic Greek writings linked with behavioral observations of with intriguing and primitive speculations regarding internal functions of the human body. In 350 B.C. Hippocrates described four Humors and influence of these represent the temperament according to particular Khilṭ (Humour) i.e. Damvi (Sanguine), Balghami (Phlegmatic), Ṣafrāwi (Choleric) and Saudawi (Melancholic). In 150 A.D. Galen, also put forward and believed four Temperaments. Since that determination of temperament is done by only observation and by asking individuals psychological, physiological and anatomical folds. From this work is has been tried to represent the qualitative parameters of Mizāj on scientific quantitative manner to make it more accurate and make them more evident to show the efficacy of theory of Mizāj and its importance in the existence of human body.