There are three problems in the Shaanxi Provincial Meteorological Service broadband communications network: the coexisting of three telecom suppliers, the messy using of IP addresses, and being unable to meet the requirement of multilink loading balancing and automatic switching between links. To solving those problems, a series of methods are adopted, such as standardizing the access methods for CMCC, CTC, and BCTV, and using the national unified IP addresses, and especially deploying the OSPF Dynamic Routing Selecting Protocol in the whole network. By adopting the OSPF protocol and such methods as dividing area reasonably and setting different configurations for the same or different OSPF costs as required, the automatic switching between different links and the traffic load balancing can be easily realized. The test indicates that the benefits of the multilink network are fully used，and the stability of network increased. The system can be used as references for the network designing of the like departments.