A glass plate cutting system comprising: an alignment unit configured to position a glass plate with respect to the cutting system in a Y-axis-direction in which the glass plate is conveyed and in a X-axis-direction perpendicular to the Y-axis-direction in a substantially horizontal plane; a X-axis-direction trimming unit configured to trim front and rear ends of the glass plate; a Y-axis-direction venting unit configured to trim opposite sides of the glass plate and to vent the glass plate along a venting scribe line formed on the glass plate; and a Y-axis-direction conveyance device configured to convey the glass plate from the alignment unit to the X-axis-direction trimming unit and the Y-axis-direction venting unit, in the direction in which the glass plate is conveyed in the cutting system; wherein the Y-axis-direction conveyance device includes a first holding unit that holds the glass plate and a first servo transport unit that transports the first holding unit; wherein the first holding unit includes a vacuum suction pad that suctions a surface of the glass plate and an up-down element that moves up and down the suction pad, and wherein the first servo transport unit includes a rail extending in parallel with a machine center in the Y-axis-direction extending through the alignment unit, and is configured to transport the first holding unit straight ahead from the alignment unit to the Y-axis-direction venting unit through the X-axis-direction trimming unit in a state in which the glass plate is lifted by the first holding unit; and wherein the alignment unit and the Y-axis-direction venting unit have a common reference line extending in the Y-axis-direction. an alignment unit configured to position a glass plate with respect to the cutting system in a Y-axis-direction in which the glass plate is conveyed and in a X-axis-direction perpendicular to the Y-axis-direction in a substantially horizontal plane; a X-axis-direction trimming unit configured to trim front and rear ends of the glass plate; a Y-axis-direction venting unit configured to trim opposite sides of the glass plate and to vent the glass plate along a venting scribe line formed on the glass plate; and a Y-axis-direction conveyance device configured to convey the glass plate from the alignment unit to the X-axis-direction trimming unit and the Y-axis-direction venting unit, in the direction in which the glass plate is conveyed in the cutting system; wherein the Y-axis-direction conveyance device includes a first holding unit that holds the glass plate and a first servo transport unit that transports the first holding unit; wherein the first holding unit includes a vacuum suction pad that suctions a surface of the glass plate and an up-down element that moves up and down the suction pad, and wherein the first servo transport unit includes a rail extending in parallel with a machine center in the Y-axis-direction extending through the alignment unit, and is configured to transport the first holding unit straight ahead from the alignment unit to the Y-axis-direction venting unit through the X-axis-direction trimming unit in a state in which the glass plate is lifted by the first holding unit; and wherein the alignment unit and the Y-axis-direction venting unit have a common reference line extending in the Y-axis-direction. wherein the first servo transport unit includes a rail extending in parallel with a machine center in the Y-axis-direction extending through the alignment unit, and is configured to transport the first holding unit straight ahead from the alignment unit to the Y-axis-direction venting unit through the X-axis-direction trimming unit in a state in which the glass plate is lifted by the first holding unit; and wherein the alignment unit and the Y-axis-direction venting unit have a common reference line extending in the Y-axis-direction.