The invention discloses a quinoa-sorghum mixed-band planting method. The method comprises the steps of field selection, field preparation, film covering, sowing, thinning, earth-up, fertilization, harvesting and the like. Quinoa and sorghum are high-pole easy-lodging crops, the strengths of stems of the two kinds of crops are different, quinoa and sorghum seeds are sowed according to the sequenceof internal strip sowing, and the situation is avoided that under severe weather such as high wind, the same kind of crops form the domino effect, and large-scale lodging is generated. According to the quinoa-sorghum mixed-band planting method, quinoa lodging is effectively prevented in the aspects such as field selection, sowing and earth-up. In addition, through cooperation application of base fertilizer and efficient composite fertilizer, the method is suitable for the whole growth period of quinoa and beneficial to lodging resistance of quinoa, the yield of quinoa is increased, and meanwhile the quality of quinoa is also effectively improved.