An improved power tool is provided which can alert a user of any halfway selection of a driving mode of a tool bit. A representative power tool is provided which is capable of switching among driving modes different in driving state of a tool bit 119. The power tool has a mode switching member 163 that switches among the driving modes, a detecting part 181 that detects a drive prohibited state in which any of the driving modes of the tool bit 119 is not selected, and indicating parts 189, 191 that indicate a result detected by the detecting part 181.