A toner filling apparatus, comprising: a filling tank which stores toner to be supplied to a toner container; a toner filling path forming member which is in communication with a toner storing room of the filling tank and which forms a toner filling path connected to an opening of the toner container; a toner fluidizing unit configured to blow air into the toner in the filling tank to fluidize the toner; a filling path opening/closing unit configured to open and close the toner filling path; a container room sucking unit comprising a suction pipe configured to suck air from the toner container through a filter member, in which the filter member is impermeable to the toner but permeable to air, wherein an end of said suction pipe with said filter member is configured to be moved and inserted in the toner container; and a control unit configured to control the toner fluidizing unit, the filling path opening/closing unit and the container room sucking unit, wherein the control unit is configured to perform a toner draw-in filling control in which when the control unit fluidizes the toner in the filling tank by the toner fluidizing unit and opens the toner filling path by the filling path opening/closing unit so as to load the fluidized toner from the filling tank to the toner container, the control unit reduces a pressure in the toner container to a negative pressure by the container room sucking unit so as to draw in the toner from the filling tank into the toner container by the negative pressure; and wherein in the toner draw-in filling control, the control unit is configured to start suction by the container room sucking unit before the toner filling path is opened. a filling tank which stores toner to be supplied to a toner container; a toner filling path forming member which is in communication with a toner storing room of the filling tank and which forms a toner filling path connected to an opening of the toner container; a toner fluidizing unit configured to blow air into the toner in the filling tank to fluidize the toner; a filling path opening/closing unit configured to open and close the toner filling path; a container room sucking unit comprising a suction pipe configured to suck air from the toner container through a filter member, in which the filter member is impermeable to the toner but permeable to air, wherein an end of said suction pipe with said filter member is configured to be moved and inserted in the toner container; and a control unit configured to control the toner fluidizing unit, the filling path opening/closing unit and the container room sucking unit, wherein the control unit is configured to perform a toner draw-in filling control in which when the control unit fluidizes the toner in the filling tank by the toner fluidizing unit and opens the toner filling path by the filling path opening/closing unit so as to load the fluidized toner from the filling tank to the toner container, the control unit reduces a pressure in the toner container to a negative pressure by the container room sucking unit so as to draw in the toner from the filling tank into the toner container by the negative pressure; and wherein in the toner draw-in filling control, the control unit is configured to start suction by the container room sucking unit before the toner filling path is opened.