The present project was designed to know the prevalence of mixed infection of Nematodes and Trematodes in camels at Lahore and the effect of this condition on different blood parameters. The source of camels was Lahore Abattoir. A total of 200 camels were examined from June 1998 to September 1998. Fecal samples were taken from the camels and at the same time blood samples were also taken from the same camel. Fecal samples were examined at Central Diagnostic Laboratory. Medicine Section, and College of Veterinary Sciences Lahore. Fecal samples were examined by the direct smear examination and salt floatation method. Camels were divided into four groups, group A. camels positive for any nematode, liver fluke and paramphistome, group B. camels positive for liver fluke and nématode, group C. camels positive for paramphistome and nematode and an other group D was comprised of camels declared negative I or above mentioned helminthes. The blood samples of only those camels were subjected for examination, which were declared positive for any of the three groups. The prevalence of group A camels was 2.5% and highest prevalence of these camels was observed in the months of June and September. The prevalence of group B was 8 %. and of group C was 3 %. The overall prevalence of nematodes and treniatocles was 70 0o. Only 30 % camels were free of these helminthes. I3lood examination conducted for group A revealed increased Total leukocyte count average was 44000/cubic mm. and range was 40000-48000/cubic nun. Average T.E.C was 3.9 M/cubic mm. and Hh. 11 gm!dl., range for T.E.C 3.6- 4.3 M/cubic mm and I-lb.. was 9-l3gm/dl. D.L.C revealed average neutrophils 75%, lymphocytes 25% and range in neutrophils was 73-77% and lymphocytes were 23-27%. Blood examination conducted for group B revealed increased Total leukocyte count average was 38000/cubic mm. and range was 33000-42000/cubic mm. Average T.E.C was 4.4 M/cubic mm. and Hb. 11.2 grnldl.. range for T.E.C 4- 4.8 M/cubic mm and I-lb. was 8-l3gm/di. D.LC revealed average neutrophils 70%, lymphocytes 28% and range in neutrophils was 68-73% and lymphocytes were 26-30% average monocytes were 2.1% and range was l-S%. Blood examination conducted for group C revealed increased Total leukocyte count average was 35000/cubic mm. and range was 28000-39000/cubic mm. Average for T.E.C 4 M/cubic mm. and Hb. 10.5 gm/dl.. range for T.E.C 3.8-4.5 M/cubic mm and Hh., was 8.8-1 1.7 gm/dl. D.L.C' revealed average neutrophils 75%, lymphocytes 24.6% and range in neutrophils was 74-77% and lymphocytes were 23-26% average range of monocyte was 0.3%, 0-1% respectively. Blood examination conducted for group D revealed increased Total leukocyte count average was 156000/cubic mm. and range was 13900-20000/cubic mm. Average for T.E.C 5.27 M/cuhic mm. and fIb. 14.6 gm/dl., range for T.E.C 4.9-5.6 M/cubic mm and Fib., was 12-l6gm/di. D.L.C revealed average neutrophils 6.8%, lymphocytes 28.4% and range in neutrophils was 65-72% and lymphocytes were 25-3O% for monocytes and eosinophil average was 1.8%, 0.8% and range was 0-3°/o,0-25 respectively.