The invention discloses a plastic-covered greenhouse pumpkin cultivation method. The method includes the following steps: firstly, sowing and raising seedlings; secondly, preparing soil and fertilizing; thirdly, planting; fourthly, managing after the planting; and fifthly, harvesting, wherein the first step of sowing and raising seedling includes (1), variety selection; (2), nutritional soil preparation; (3), seedbed preparation; (4), seed soaking and seed accelerating germination; (5), sowing; and (6), seedling stage management; and the fourth step of managing after the planting includes (1), after manuring; (2), pruning; (3), artificial pollination; and (4), pest control. According to the plastic-covered greenhouse pumpkin cultivation method, a plastic-covered greenhouse is utilized for cultivating pumpkins, the cultivation method is scientific and reasonable, complete in management, capable of enabling the pumpkins to be ripe in advance, improved in quality, high in yield, higher in economic benefits, and capable of meeting market needs.