Peste des petits ruminants (PPR) is very important viral disease of sheep and goats it cause huge loss among susceptible animals in animals in countries which it is prevalent. Laboratory diagnosis of PPR is laborious and the use of kits are very expensive, this has restricted its diagnosis in many laboratories.this book provides investigation the prevalence of the PPR, implementation of passive haemaglutination test, reverse passive haemaglutination test (RpHA) for detection of PPR antigen and antibodies and isolation of PPR virus. RpHA was very sensitive and specific for detection PPRV antigen in tissues and nasal discharge samples, compared with IcELISA the agreement was very strong agreement. This book should be useful for the veterinarian and technician in the field and clinics to diagnosis PPR within 3 hous