Disclosed is a combined ozone disinfector, of which the ozone generating and controlling unit comprises an ozone generating and controlling cabinet 1, an air drier 2, a flow control device 13, an ozone generating devices group 3, a first one-way solenoid valve 4, an ultrasonic humidifier 5, a negative pressure sensor 6, a disinfection chambers group 7, a second one-way solenoid valve 8, a vacuum pump 9, an electric heating pipe style ozone disinfection apparatus 10 and a computer control system 11, wherein the ozone generating devices group 3 is composed of 2-6 ozone generating devices which are connected in parallel, each of the ozone generating devices is installed with an independent power supply, the air discharging end of the ozone generating devices group 3 is sequentially mounted with the first one-way solenoid valve 4 and the ultrasonic humidifier 5, the disinfection chambers group 7 is composed of 2-6 disinfection chambers which are connected in parallel, the disinfection chambers are horizontal cylindrical structures and in parallel connection with the disinfection chambers, the air inlet end of the disinfection chambers group 7 is arranged with the negative pressure sensor 6, each combined air inlet of the disinfection unit is installed with a one-way solenoid valve 8, and each disinfection chamber is equipped with a storing pony truck.