This study aimed to qualitatively analyze the responses to the integrated tasks for the Korean Speaking Test for Academic Purposes (KoSTAP), to discover the types and the usage of reading stimulus and to examine the discourse characteristics according to the test takers’ scores. It was known that the stimulus necessary for constructing the integrated speaking tasks have a certain influence on the performance of the task. This study was conducted by conducting a discourse analysis of the task takers’ performance in integrated reading-speaking tasks collected through the KoSTAP. The use of reading stimulus was categorized into “reproduction“ and “creation“. Four subtypes of “reproduction“ and five subtypes of “creation“ were also identified.