Haemonchosis in sheep and goats is caused by Haemonchus contortus. Economic losses due to haemonchosis in sheep and goats were calculated in the present study. This disease cause great economic losses in terms of decrease in meat and milk production, loss of weight, treatment cost of diseased animal and additional labour required for handling such animals. The manifestation of disease occurs in the form in terms of anaemia, anasarca, poor weight gain, emaciation and mortality. Also mortality rate is very high in young animals. However treatment gradually improved the vigor of animals. The data obtained from 4 districts depicted that the financial losses were of worth Rs. 8800.09 million annually in Pakistan over one year period. It was estimated that about 29% reduction in milk yield occurred due to haemonchosis so loss in Pak rupees is 134062.39 million annually. It was estimated that about 27% reduction in weight that caused loss more than 40 million pak rupees. The losses due to this particular parasite are very higher in young animals. Its value may reach to several crores of Pakistan rupees. Mortality due to haemonchosis cause losses upto Pak Rs. 142902 million annually. Overall cost of treatment of haemonchosis is about Pak Rs. 25 million annually.