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. The power tool has a mode switching member that switches among the driving modes, a detecting part that detects a drive prohibited state in which any of the driving modes of the tool bit is not selected, and indicating parts that indicate a result detected by the detecting part.