A multi-projection system comprising: a plurality of projection surfaces capable of being installed in a single theatre; at least one audience seat whose direction is configured to be changed depending on images projected on the plurality of projection surfaces; and a seat control device for controlling the operation of the at least one audience seat, wherein the seat control device is configured to transmit a control signal to the at least one audience seat, and the control signal includes time information and operation information, said operation information including movement speed information so that the audience seats are capable of being operated at different speeds depending on the type of image, characterized in that: the plurality of projection surfaces are composed of a screen and walls, wherein the plurality of projection surfaces are arranged so as not to be parallel to each other and are arranged to surround the at least one audience seat; the operation of each audience seat is synchronized with the images, projected on the plurality of projection surfaces, based on time information, such that when an object in an image projected on a first projection surface moves to a second projection surface, the seat control device is configured to control the audience seat to change the viewing direction toward the second projection surface, and it further comprises an integrated management device configured to correct the image contents so as to offset the difference in properties based on the information on the difference in properties between the two or more projection surfaces. a plurality of projection surfaces capable of being installed in a single theatre; at least one audience seat whose direction is configured to be changed depending on images projected on the plurality of projection surfaces; and a seat control device for controlling the operation of the at least one audience seat, wherein the seat control device is configured to transmit a control signal to the at least one audience seat, and the control signal includes time information and operation information, said operation information including movement speed information so that the audience seats are capable of being operated at different speeds depending on the type of image, characterized in that: the plurality of projection surfaces are composed of a screen and walls, wherein the plurality of projection surfaces are arranged so as not to be parallel to each other and are arranged to surround the at least one audience seat; the operation of each audience seat is synchronized with the images, projected on the plurality of projection surfaces, based on time information, such that when an object in an image projected on a first projection surface moves to a second projection surface, the seat control device is configured to control the audience seat to change the viewing direction toward the second projection surface, and it further comprises an integrated management device configured to correct the image contents so as to offset the difference in properties based on the information on the difference in properties between the two or more projection surfaces. the plurality of projection surfaces are composed of a screen and walls, wherein the plurality of projection surfaces are arranged so as not to be parallel to each other and are arranged to surround the at least one audience seat; the operation of each audience seat is synchronized with the images, projected on the plurality of projection surfaces, based on time information, such that when an object in an image projected on a first projection surface moves to a second projection surface, the seat control device is configured to control the audience seat to change the viewing direction toward the second projection surface, and it further comprises an integrated management device configured to correct the image contents so as to offset the difference in properties based on the information on the difference in properties between the two or more projection surfaces.