The invention discloses an SOA load balancing device and routing algorithm using device, the device is composed of a client, a load balancing device and an access server orderly connected together, the load balancing device comprises a plurality of node servers connected two by two, the access server is composed of a plurality of access servers separated from each other, each node server is connected to all access servers. According to the SOA load balancing device and routing algorithm using device, the current request can be transmitted to the most excellent node server and the client can obtain the fastest result response.