This study was carried out to illustrate the effects of phytobiotics (Orego-stim®, promazine plus®) in prevention of coccidiosis in poultry farms and also to examine these effects on some blood biochemical, haematological and immunological parameters in broiler chickens. One hundred and fifty, one-day old Cobb chicks were used. They were divided into six equal groups, 25 birds each. The 1^st group was non-infected non-treated group. The 2^nd group was non-infected, treated with promazen- plus (1ml/Liter drinking water/100 birds (0-14 day), 3 ml/Liter drinking water/100 birds (15-28 day) and 5 ml/Liter drinking water /100 birds (29-42 day).  The 3^rd group was non-infected, treated with orego-stim (0.3 ml/Liter drinking water).  The other groups were inoculated intra-crop with 1x10⁵ infective oocysts of field strain of Eimeria spp. on the 8^th day of age. The 4^th group was infected non-treated. The 5^th group was promazen- plus (the same dose of group 2). The 6^th group treated with orego-stim (the same dose of group 3). Birds received phytobiotics showed better anticoccidial effect, improvement in immunological parameters with good effects on some blood biochemical and haematological parameters were resulted. Phytobiotics can be considered as an ideal growth promoter, highly effective anticoccidial, and immunostimulant agents.