A bag-making and packaging machine comprising: a bag-making and packaging unit configured to form a sheet-like film into a tubular shape and seal the film formed into the tubular shape to thereby form the film into bags; and a film supply unit configured to hold a first film roll into which a first film serving as the sheet-like film is wound and supply to the bag-making and packaging unit the first film drawn from the first film roll, wherein the film supply unit includes a film roll holding unit that rotatably holds the first film roll, a frame that supports the film roll holding unit, a film temporary placement member on which a vicinity of a leading end portion of the first film wound into the first film roll is manually temporarily placed when attaching the first film roll to the film roll holding unit, a rotating mechanism that rotates the first film roll held by the film roll holding unit, and a control unit configured to control the rotating mechanism, characterized in that the film supply unit further comprises a leading end portion detection sensor configured to detect that the leading end portion of the first film is positioned in a prescribed position, and wherein the control unit is configured to, after the vicinity of the leading end portion of the first film has been temporarily placed on the film temporary placement member, cause the rotating mechanism to rotate the first film roll to thereby convey the first film along a predetermined conveyance path until the leading end portion detection sensor detects that the leading end portion of the first film is positioned in the prescribed position. a bag-making and packaging unit configured to form a sheet-like film into a tubular shape and seal the film formed into the tubular shape to thereby form the film into bags; and a film supply unit configured to hold a first film roll into which a first film serving as the sheet-like film is wound and supply to the bag-making and packaging unit the first film drawn from the first film roll, wherein the film supply unit includes a film roll holding unit that rotatably holds the first film roll, a frame that supports the film roll holding unit, a film temporary placement member on which a vicinity of a leading end portion of the first film wound into the first film roll is manually temporarily placed when attaching the first film roll to the film roll holding unit, a rotating mechanism that rotates the first film roll held by the film roll holding unit, and a control unit configured to control the rotating mechanism, characterized in that the film supply unit further comprises a leading end portion detection sensor configured to detect that the leading end portion of the first film is positioned in a prescribed position, and wherein the control unit is configured to, after the vicinity of the leading end portion of the first film has been temporarily placed on the film temporary placement member, cause the rotating mechanism to rotate the first film roll to thereby convey the first film along a predetermined conveyance path until the leading end portion detection sensor detects that the leading end portion of the first film is positioned in the prescribed position. a film roll holding unit that rotatably holds the first film roll, a frame that supports the film roll holding unit, a film temporary placement member on which a vicinity of a leading end portion of the first film wound into the first film roll is manually temporarily placed when attaching the first film roll to the film roll holding unit, a rotating mechanism that rotates the first film roll held by the film roll holding unit, and a control unit configured to control the rotating mechanism, characterized in that the film supply unit further comprises a leading end portion detection sensor configured to detect that the leading end portion of the first film is positioned in a prescribed position, and wherein the control unit is configured to, after the vicinity of the leading end portion of the first film has been temporarily placed on the film temporary placement member, cause the rotating mechanism to rotate the first film roll to thereby convey the first film along a predetermined conveyance path until the leading end portion detection sensor detects that the leading end portion of the first film is positioned in the prescribed position.