The invention discloses a method and a device for acquiring the information of a business server in real time. The method comprises the following steps: a domain name server sends a query command to a directory server; the domain name server receives the address and state information of the business server returned by the directory server; the domain name server filters the business server state information meeting a predetermined condition according to the configured predetermined condition; and the domain name server returns the filtered business server address information back to a client terminal. According to the method and the device provided by the invention, the technical problem that the performance of the business server is continuously reduced due to a large number of continuous requests is solved.