The invention discloses a concurrent processing based WHOIS query method. The method comprises the steps of receiving a data query request of a user, and acquiring a query domain name; acquiring a first-level service provider address according to a suffix of the query domain name; searching a service node queue corresponding to the first-level service provider address from a preset queue pool according to the acquired first-level service provider address; acquiring a service node from the head of the service node queue; sending the query domain name to a first-level service provider through a query server to perform WHOIS query according to information of the service node; receiving and parsing first-level WHOIS information returned by the first-level service provider; and returning a query result to the user, or querying at a second-level service provider according to the first-level WHOIS information, and returning a query result to the user. The concurrent processing based WHOIS query method realizes an objective of providing a uniform query entry, supporting query for various domain name suffixes and supporting high concurrent processing.