The clinical aspects of paramyxovirus type 1 experimental infection in pigeons were studied, and antigenic, biological, physical and chemical characterics, as well as virulence for chickens of pigeon paramyxovirus type 1 (pigeon PMV-1), were determined and compared with those of Newcastle disease virus(NDV),particularly the visce rotropic velogenic Newcastie diseasc virus(VVNDV).Inaddition,the efficacy for pigeons against NDV or Pigeon PMV-1 of sereralNeweastle disease raceines of ten used was appraised,and serological survey ofparamyxovirttS type 1 infections in pigeons in the Guangzhou and Shenzhen areaswas carried out.