Jihua 31, a new peanut variety with high yield and low-temperature tolerance, was developed by the Jilin Academy of Agricultural Sciences through sexual hybridization and pedigree selection, using You 4 as the female parent and Jinyinhua 1 as the male parent. The 100-pod weight and 100-kernel weight of Jihua 31 were 166.2 g and 66.4 g, respectively, and the shelling percentage was 67.5%. The peanut variety registration trial in Northeast China was participated in from 2022 to 2023. The average yield over the two years was 4313.33 kg/ha, which was 7.82% higher than that of the control. Overall, Jihua 31 has high yield and good disease resistance, while maintaining stable production, it retains the characteristic of low-temperature tolerance. It is suitable for spring sowing in the Northeast ecological zone and the first temperate zone of Heilongjiang Province. In 2024, it was registered with the Ministry of Agriculture and Rural Affairs, with the registration number GPD Peanut[2025] 220056. This article mainly introduces the breeding process, characteristics, low-temperature tolerance, yield performance and key points of cultivation techniques of Jihua 31, providing an important quality support for improving the quality and efficiency of peanuts in cold regions.