Abstract: Through the variety screening of Chongming yam, applications of fertilizers and diseases and pests control and other critical systems technology, the yam variety with good quality and high yield which adapts to the production in local area and its safety production technology have fundamentally identified. The results of safety production technology of Chongming yam showed that: compared with the conventional demonstration area, in the safety production standardization demonstration area, the yield per 667㎡ increased from 2197 kg to 3081 kg and increased by 40.24%, moreover by using insecticide lamps and rational use of pesticides with highly active and low mammalian toxicity and low residue, the control effects to underground pests increased from 43.6% to 94%, and the damage rate of product decreased from 95.6 % to 1.6 %. A set of operating rules of pollution-free standardization production techniques of Chongming yam was formulated. The 135.3 hm2 demonstration trials showed that the average yield of yam per 667 m2 increased from 2565 kg to 3087 kg, can increase the economic benefit 1058 yuan, and can increase economic benefit 214.7 million yuan in 135.3hm2.