In Ethiopia the history of khat dates back to the 13th century and currently it is abundant commodity cultivated and anomalously chewed. Researches showed that production of khat leaf is profitable as an alternative to other crops supplementing household income and bridges the lean season in the food calendar[7,8].In 1999In /2000Ethiopia Khat was the second important earner of foreign exchange after coffee[9]. Another study indicated that Khat is the largest export crop, following coffee and oil seed, contributing 13.4% of the export earning to the Ethiopian economy[10,11].