In order to select suitable sweet potato variety of high-yield,top quality and high-benefit for Guanyang,seven introduced varieties and three local varieties are chosen to conduct a comparison experiment.The results show that five varieties such as 6025 etc.have represented many good characters as high-yield,good shape,similar size and sweet taste etc.so that they can be used as preferred varieties.Guangyang potato and chicken-bone potato with high starch content can be used as processing varieties.Three varieties（Chuanshan purple etc.） with high pigment content can be used as raw material for purple pigment processing.Other two varieties need to be tested further for final conclusion.
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