The invention discloses a method to realize business connection resource management, which comprises: a. after receiving business connection require of calling user, the calling proxy sends the require to source load-bearing network explorer; b. the explorer receives the require, selects path in domain or within domains, records the path resource, and decides whether itself is the objective explorer; if yes, executing step c; or else, the current explorer sends the require to next explorer and returns to step b; c. it finishes the business route and allocation for path resource, does not send QoS strategy to load-bearing network route device, and returns connection resource response immediately to higher explorer. This invention cuts spending and running load, and can ensure the QoS for every business flow.