The invention relates to an agriculture machine and provides a spot-sowing machine capable of adjusting the distance between crop plants and row distance. The spot-sowing machine comprises an inner frame and an outer frame. The bottom surface of the inner frame is provided with a fixed structure provided with punching and positioning devices; the left lateral surface and right lateral surface of the inner frame are both provided with a vertically-arranged guide rail (a); a slide block (a) is arranged on the guide rails (a); the upper surface of the inner frame is provided with a plurality of seed inlets; the left lateral surface and right lateral surface of the outer frame are both provided with a horizontally-arranged guide rail (b), a slide block (b) is arranged on the guide rails (b), and the outer frame is provided with a distance limiting device for the slide block (b). By adjusting the slide distance of slide block (b) on the guide rails (b), the crop distance can be adjusted. By adjusting the distance between punching and positioning devices, the row distance can be adjusted. The spot-sowing machine can be used to carry out tests on distance between crop plants with a height of 3 cm or more, and the adjustment accuracy of plant distance can reach the millimeter level. The inner frame and outer frame are both in a rectangular shape, so the machine will not slide easily after being located on the ground and has the advantages of high reliability and accuracy. Moreover, the spot-sowing machine can provide reliable references for research and application of crop accurate sowing technology, is capable of sowing seeds in a plurality of rows at a time, and improves the sowing efficiency.