A cleaner includes a body provided with a dust collecting container for storing dust, a fan motor installed at the body and generating a suction force; a vacuum cleaning head disposed at a lower side of the body, into which dust is sucked when the cleaner performs vacuum cleaning. A water cleaning head is mounted at the vacuum cleaning head, for spraying cleaning water onto a region to be cleaned, sucking contaminated water after completing water cleaning, and storing the sucked contaminated water, when water cleaning. By implementing both a vacuum cleaning function for sucking dust and a water cleaning function in one cleaner, a cleaner capable of reducing the cost and, increasing convenience of use is provided.