This study is aimed to suggest easy and meaning method when we judge indirect speech acts(ISA). We deal with four problems which appeared when we attach ISA annotation to spoken corpus. The first problem is that the speech acts of Korean do not part properly. To part properly the speech acts of Korean, we use classification method by grammar form. The second is that the discourse particles, the acknowledgement acts and the call acts are ISA really. Those are not ISA because differ with other speech acts about class. The third is that ISA degree was not decided. We decided that both the conventional ISA and the non-conventional ISA is a ISA. The fourth is that there is ISA in responses really. We see that those exist, and those are classified to the conventional ISA and the non-conventional ISA as ISA in requirements.