Abstract: In order to make full use of the abundant rice husk resources in rice producing areas,a culture medium with rich resources,low cost and good effect was screened for the production of micro potato.A single factor random block design was adopted,and four different substrate treatments were set up,namely rice husk,rice husk（fermentation）,rice husk+vermiculite（1:1）and vermiculite.The seedling rate,number of tubers,yield per hectare,weight of single tuber,number of tubers per plant and weight of single tuber were compared.The results showed that rice husk+vermiculite （1:1）was the best substrate for the survival rate,reaching62.00%,but each substrate treatment had no significant effect on the survival rate.Both the number of tubers and the yield per unit area were the highest under the treatment of rice husk+vermiculite（1:1）,reaching7.77×10~4·（667 m~2）^-1 and 135.90kg·（667 m~2）^-1,which were significantly higher than the control vermiculite（CK）treatment.Rice husk+vermiculite（1:1）,rice husk（fermentation）and rice husk（fermentation）treatments had the best performance in tuber weight per seed,tuber number per plant and tuber weight per plant,respectively,but there was no significant difference among all substrate treatments.It shows that the treatment of rice husk+vermiculite（1:1）is more suitable for the practical production and application of micro potato culture medium.