The embodiment of the invention discloses a request service isolating method and system and belongs to the technical field of the internet. The method comprises the steps of carrying out offline request service and online request service by employing the same domain name; when the offline request service is carried out, resolving the domain name to an offline IP address (Internet Protocol Address); and when the online request service is carried out, resolving the domain name to an online IP address. According to the embodiment of the method and the system, the domain name employed for carrying out the offline request service and the online request service is uniformed, and when offline development and test are carried out, the online service is not requested.