Abstract: Funingshu 12, a new sweet potato variety of high yield type, was bred by crossing between Ningshu 3 (♀)and Jinshan 72 (♂) . In the provincial trial and production test pilot, the average fresh potato production increase significantly, dry matter production equivalent to the control of Jinshan 57. Two-year trial in provinces which the average fresh potato yield 12.92% increase compared to the control, and increase 23.99% of yield compared with the control in fresh potato production test. The dry matter rate of 23.66% and extraction rate of 14.23%. The tests showed that the variety had a high yield, stable yield, better quality, resistance of Fusarium disease and Warm potato diseas, wide adaptability. Suitable for large scale applications in Fujian Province.The variety was validated in March, 2011 by Fujian Provincial Crop Variety Approval Committee, and there is a good prospect.