The utility model provides a collection rain winter protection in seedling stage cover which the characteristics are: it includes winter protection cover and collection rain bucket, the built -in collection rain bucket of winter protection cover, the mouth that catchments of winter protection cover is connected with collection rain barrel seal, and the winter protection cover links firmly with furrow and ridge platform. Application method is: to collect the rain bucket and arrange in between two seedlings, detain on two seedlings and collection rain bucket and fix, the mouth that catchments is connected with collection rain barrel seal, at ordinary times, it keeps warm for the seedling to plug the picture peg that keeps out the wind, when the winter protection case temperature rose, temperature in the collection rain bucket rose and the picture peg aeration cooling that keeps out the wind during the high temperature, is pull open to the heat accumulation, when the winter protection case temperature hangs down, plug the picture peg that keeps out the wind and keep warm for the seedling, when the winter protection case temperature continued to reduce, the exothermic cooling of rainwater in the collection rain bucket prevented that winter protection cover temperature from reducing, collect the rainwater when raining, the rainwater is discharged by the overflow mouth when the water level exceedes the overflow mouth in getting into collection rain bucket, when the seedling need water, the manual valve of opening used the rainwater in the collection rain bucket to water as the seedling, it topdresses to combine waters, improves fertilizer use efficiency.