The present invention relates to a broom, and in particular to a multifunctional broom with a rotatable head. According to the present invention, an brush head and a rake tooth are provided on a broom head. The rake tooth can be used for cleaning of regions such as outdoor grounds and lawns, and the brush head can be used for indoor cleaning. Moreover, the rake tooth can be extended out of or retracted into the broom head through the first telescopic mechanism. The broom of the present invention is very simple and convenient to use and provides more thorough cleaning. The first telescopic mechanism enables automatic telescoping depending on various conditions of ground, thereby providing more thorough cleaning and being more convenient and efficient (FIG. 1).