A method for manufacturing a surgical guide and a crown (c) for a dental implant, where the method comprises: a first operation of coupling a tray having a plurality of reference markers attached to a side surface thereof and an impression material injected to an inner surface thereof, to an inside of a patient's mouth for taking an impression having a second image matching groove corresponding to a tooth implanting portion; a second operation of obtaining an integrated scanned image and obtaining an CT image through CT scanning of the upper and lower jaws; a third operation of obtaining a three-dimensional occlusion guide image by overlapping the obtained integrated scanned image with the obtained CT image using the reference markers as references and matching the images through a main matching process in a difference map from which an image matching degree between the images is output; and a fourth operation of setting a height of a crown (c) based on the three-dimensional occlusion guide image, and manufacturing a surgical guide including a fixing groove matched with an internal shape of the patient's mouth and a guide hole formed along an implanting position of a fixture corresponding to the set crown (c), characterized in that the second operation includes obtaining a primarily scanned image through scanning of the tray in which an occlusal height is set by stacking an occlusal base on an outer surface thereof and adjusting a thickness thereof, obtaining a secondarily scanned image through oral scanning of an occluded state of upper and lower jaws while the tray is installed, preliminarily matching the secondarily scanned image with the primarily scanned image, wherein the integrated scanned image is obtained considering a vertical dimension by reversing the second image matching groove so that an image of the second image matching groove is dimensionalized from the primarily scanned image, wherein, in the second operation, the occlusal height is calculated according to patient's mastication feeling, while the tray is installed, and adjusted by performing a cutting process based on a mastication mark of an opposing tooth indicated on an upper surface of the occlusal base, when the upper and lower jaws are occluded, and in the fourth operation, the crown (c) is designed corresponding to a distance between the upper and lower jaws spaced corresponding to the occlusal height based on the three-dimensional occlusion guide image. a first operation of coupling a tray having a plurality of reference markers attached to a side surface thereof and an impression material injected to an inner surface thereof, to an inside of a patient's mouth for taking an impression having a second image matching groove corresponding to a tooth implanting portion; a second operation of obtaining an integrated scanned image and obtaining an CT image through CT scanning of the upper and lower jaws; a third operation of obtaining a three-dimensional occlusion guide image by overlapping the obtained integrated scanned image with the obtained CT image using the reference markers as references and matching the images through a main matching process in a difference map from which an image matching degree between the images is output; and a fourth operation of setting a height of a crown (c) based on the three-dimensional occlusion guide image, and manufacturing a surgical guide including a fixing groove matched with an internal shape of the patient's mouth and a guide hole formed along an implanting position of a fixture corresponding to the set crown (c), characterized in that the second operation includes obtaining a primarily scanned image through scanning of the tray in which an occlusal height is set by stacking an occlusal base on an outer surface thereof and adjusting a thickness thereof, obtaining a secondarily scanned image through oral scanning of an occluded state of upper and lower jaws while the tray is installed, preliminarily matching the secondarily scanned image with the primarily scanned image, wherein the integrated scanned image is obtained considering a vertical dimension by reversing the second image matching groove so that an image of the second image matching groove is dimensionalized from the primarily scanned image, wherein, in the second operation, the occlusal height is calculated according to patient's mastication feeling, while the tray is installed, and adjusted by performing a cutting process based on a mastication mark of an opposing tooth indicated on an upper surface of the occlusal base, when the upper and lower jaws are occluded, and in the fourth operation, the crown (c) is designed corresponding to a distance between the upper and lower jaws spaced corresponding to the occlusal height based on the three-dimensional occlusion guide image.