A power tool comprises a function device (10) and a power device (20). The function device (10) is provided with a mounting portion (121) for mounting the power device (20). The power device (20) comprises a prime motor and a battery pack (23) that can be combined with a power housing (21) in a separated manner. The prime motor may be a motor (22). The power housing (21) is provided with at least an adaptation portion (211), which enables the power device (20) to be mounted on the function device (10); and a combination portion (212), used to provide a space or a structure for combining the battery pack (23). When the function device (10) and the power device (20) form a whole by means of the mounting portion (121) and the adaptation portion (211), the battery pack (23) can be separated from the power housing (21). A power device mower provided with the power tool can use multiple battery packs to provide power and is convenient to use.
