1. A semantic service application system, comprising: a semantic service server for collecting pieces of ontology-based semantic service information and ontology from a plurality of service servers, registering the pieces of ontology-based semantic service information and ontology, generating semantic service pipelines based on a plurality of semantic services according to a condition inputted by a user, and executing a specific semantic service pipeline; a semantic service pipeline providing server for requesting the semantic service server to execute the specific semantic service pipeline, receiving a result of the execution, determining whether to select the specific semantic service pipeline, receiving the specific semantic service pipeline by requesting the specific semantic service pipeline from the semantic service server if the specific semantic service pipeline is determined to be selected, and storing the specific semantic service pipeline; and a service server for receiving a specific semantic service pipeline by requesting the specific semantic service pipeline from the semantic service pipeline providing server and incorporating the received semantic service pipeline into its specific web frame or web page.