The invention discloses a method, device and system for managing a continuous integration processing script, and belongs to the field of continuous integrations. The method comprises the following steps that in a continuous integration process of a target business, when the business proprietary processing is carried out, a continuous integration server can download a processing script for the business proprietary processing from an appointed script storage location, wherein a business developer can transmit the complied or modified processing script for the business proprietary processing to the appointed script storage location, so as to update the processing script for the business proprietary processing. By adopting the method, device and system for managing the continuous integration processing script provided by the invention, the business developer can only update the processing script for the business proprietary processing, and cannot modify a processing script for public processing; therefore, normal operation of the continuous integration processing of the target business and other businesses can be guaranteed simultaneously.