Abstract: A new hybrid cucumber variety Mingyan 5 was bred by Sanming Institute of Agricultural Sciences with Shaxian Local Cucumber'stable inbred line as female parent and Taiwan King of Heat Tolerant Cucumber'stable inbred line as male parent. This variety s plant grew stronger and had the characteristics of moderate branch, straight and long stick-shape fruit, dark green and uniform fruit colour, black dense spines, and green sweet crispy fruit flesh. High yield, high commercial value, and cultivability in spring or autumn were its advantages. Plot yield appraisal experiments, variety comparative tests and production tests from 2007 to 2010 showed that its whole growth period in spring was about 130d. Its yield was 64500-82500 kghm-2, and increased by 2.9%-32.6% compared to Zhongnong 8. While its whole growth period in autumn was 80-85 d. Its yield was 57000-67500 kghm-2, and increased by 1.8%-21.9% compared to Zhongnong 8.