The present invention discloses a stereoscopic display device and a manufacturing method thereof, which comprises: the display panel comprises a first row sub-pixel and a second row sub-pixel adjacently disposed in the column direction, the display control unit acquires a plurality of viewpoint images and divides the plurality viewpoint images into a first group viewpoint image and a second group viewpoint image, the display control unit further controls the first row sub-pixel to periodically display the content of each viewpoint image in the first group viewpoint image, and controls the second row sub-pixel to periodically display the content of each viewpoint image in the second group viewpoint image; the grating lens comprises a first row lens unit and a second row lens unit adjacently disposed in the column direction, which respectively cover on the first row sub-pixel and the second sub-pixel, the lens unit of the first row lens unit and the lens unit of the second row lens unit are staggered from each other along the row direction, and the staggered amount is less than one sub-pixel cycle, which can eliminate the moiré and can solve the crosstalk between each adjacent pixel unit. Through the above way, the present invention can eliminate the moiré and can solve the crosstalk between each adjacent pixel unit.