An inkjet printing structure comprising: a crossbeam having a front guide rail and a rear guide rail provided on a bottom surface thereof, with the front guide rail and the rear guide rail connected to the crossbeam; a connecting block mounted with a first slider fitting with the front guide rail and the rear guide rail; a first drive mechanism provided between the crossbeam and the connecting block, which includes a first linear motor for driving the connecting block to move along a first direction parallel to a length direction of the crossbeam, wherein the first linear motor is located between the front guide rail and the rear guide rail, with a first primary of the first linear motor fixedly connected to the bottom surface of the crossbeam, and a first secondary of the first linear motor fixedly connected to a top surface of the connecting block; and a lifting device connected to a bottom surface of the connecting block, which comprises an inner frame, an outer frame, a third drive mechanism, lifting mechanisms and a synchronizing mechanism, wherein the inner frame is configured to connect a printhead bracket, and is moveable relative to the outer frame through the lifting mechanisms located at both sides thereof, both ends of the synchronizing mechanism are respectively connected to the lifting mechanisms, the synchronizing mechanism is configured to synchronize the lifting mechanisms at both sides of the inner frame, and the third drive mechanism is configured to synchronously drive the lifting mechanisms at both sides of the inner frame through the synchronizing mechanism to drive the inner frame to move up and down along a third direction perpendicular to the length direction of the crossbeam; wherein a left guide rail and a right guide rail are further provided on the bottom surface of the connecting block, a second slider fitting with the left guide rail and the right guide rail is installed on the outer frame, and a second drive mechanism is provided between the connecting block and the lifting device for driving the connecting block to move back and forth along a second direction perpendicular to the length direction of the crossbeam. a crossbeam having a front guide rail and a rear guide rail provided on a bottom surface thereof, with the front guide rail and the rear guide rail connected to the crossbeam; a connecting block mounted with a first slider fitting with the front guide rail and the rear guide rail; a first drive mechanism provided between the crossbeam and the connecting block, which includes a first linear motor for driving the connecting block to move along a first direction parallel to a length direction of the crossbeam, wherein the first linear motor is located between the front guide rail and the rear guide rail, with a first primary of the first linear motor fixedly connected to the bottom surface of the crossbeam, and a first secondary of the first linear motor fixedly connected to a top surface of the connecting block; and a lifting device connected to a bottom surface of the connecting block, which comprises an inner frame, an outer frame, a third drive mechanism, lifting mechanisms and a synchronizing mechanism, wherein the inner frame is configured to connect a printhead bracket, and is moveable relative to the outer frame through the lifting mechanisms located at both sides thereof, both ends of the synchronizing mechanism are respectively connected to the lifting mechanisms, the synchronizing mechanism is configured to synchronize the lifting mechanisms at both sides of the inner frame, and the third drive mechanism is configured to synchronously drive the lifting mechanisms at both sides of the inner frame through the synchronizing mechanism to drive the inner frame to move up and down along a third direction perpendicular to the length direction of the crossbeam; wherein a left guide rail and a right guide rail are further provided on the bottom surface of the connecting block, a second slider fitting with the left guide rail and the right guide rail is installed on the outer frame, and a second drive mechanism is provided between the connecting block and the lifting device for driving the connecting block to move back and forth along a second direction perpendicular to the length direction of the crossbeam.