To provide a floor cleaning apparatus which enables an operator to perform operations to start or stop supply of floor applying liquid to a mop at the operator's hand and can contribute overall reduction of fabrication cost by realizing simplification of a structure thereof.

A floor cleaning apparatus comprises: a handgrip shaft 2; a liquid storing container 3 for storing a liquid to be applied on a floor; and a mop holder which is attached on the lower end part of the handgrip shaft 2, and accommodates liquid wax W sent from the liquid storing container 3 and feed it to the mop 5; wherein the liquid storing container 3 is formed to be capable of becoming tightly sealed, a wax lead-through pipe 63 is disposed between a lower part of this liquid storing container 3 and the mop holder 4, an air in-take tube 62 is connected to an upper part of the liquid storing container 3, and a cock member 61 for performing operations for in-take and shut off of the air is attached to a top part of this air in-take tube.