1. A path-token-based web service caching method comprising: (a) determining whether or not stored cache data exists when a web service call request exists; (b) when the cache data does not exist, creating a predetermined path-token set and a predetermined tag data set based on a message schema of Web Services Description Language (WSDL), and creating a request Simple Object Access Protocol (SOAP) message; (c) creating a request SOAP message template by applying a path-token on the created request SOAP message, and calling the web service; and (d) creating cache data including the tag data set, input values set of web service operation, the request SOAP message template, the request SOAP message, and SOAP binding information.