The v Concept of dosha has been around for as long as ancients have been practicing Ayurveda from Charaka to Hippocrates, all have practiced the system on the basis of tri-dosha and panchamahabhuta theory. Tri-doshas are basic elements of the body, mean while Rakta also a major constituent of the body called as chaturtha dosha in Sushrutha samhitha. Through the current literature available has suggested, rakta as to sustain, maintain, support and destroy the body; the comphensive understanding of this concept involves so many questions as Rakta to be considered as chaturtha dosha or not.