Camels are the top herds wealth in KSA, since is considered as heavy animal population, breeding resist more dangerous diseases. Calf-camels are precious nuclei for veterinary farms. It's catch easily infection and ended by death. Present study based on the more infectious diseases at nursery period for neonatal calf-camels. The study was conducted at Taif, during 2012. Taif is a rich area of camels population and breeding. Data were collected included numbers of total calf-camels aged 0-14 days, scoured calf-camels, morbidity and mortality rates according the clinical signs and specimens collected for examination. Total calf-camels under study were 1200, morbidity rates were 240(20%) from all examined calf-camels, born at winter 130(54.2%) and at summer 110(45.8%). Mortality rates were 109(54.4%) from the scoured calf-camels, at winter 57(52.3%) and at summer 52(47.7%). The predominant isolates were E. coli(56.3%), Clost. p.(53.3%), Cam. j. (29.6%), Sal. t.(18.8%), Prot. v. (15.4%), Ent. f.(15%), Br. a.(14.2%), ETEC (9.6%) and Yer. e.(9.2%). The haematology parameters were at winter and summer as follows Blood pH 7.13 and 7.12, Hb 11.1 and 11.0 gm/dl, total RBCs 10.3 and 10.2X10⁶ /Cumm, PCV 52.1 and 52.3%, and total WBCs 11.2 and 11.7X10³ /Cumm respectively. The biochemical parameters were at winter and summer as follows total protein was 8.14 and 8.15 g/dl, sodium 117.1 and 117.2 m.Eq/L, potassium 7.3 and 7.4 m.Eq/L, chloride 69.5 and 69.8 m.Eq/L, urea 38.3 and 38.6 mg/dl, finally createnine 3.1 and 3.2 mg/dl respectively.