This study conducted a detailed analysis of the continuous cropping obstacle characteristics in the growing facility agriculture at the NorthJiangsu coastal reclamation region.By regional survey,sampling and analysis,the characteristics of continuous cropping obstacle in soil quality for two typical greenhouse vegetables,pepper and Chinese chive,were revealed.Results showed that with the increasing of continuous cropping years,the surface (0~20 cm) and rootlayer (20~60 cm) soil in the two types of vegetable greenhouses turned to a hardening trend and a mild to moderate salinization trend.The soil organic matter,total nitrogen,available nitrogen and available potassium contents and the soil microbial quantities turned to the significant decreasing tends,while the soil total phosphorus,available phosphorus and total potassium contents had no significant change.It was demonstrated that the soil in the continuous cropping pepper and Chinese chive greenhouses was rich in phosphorus,but needed more nitrogen,potassium and organic fertilizers.After 3 years continuous cropping of greenhouse pepper and Chinese chive,some serious continuous cropping obstacles appeared in the greenhouse soil quality,such as the high risk of soil secondary salinization,nutrient unbalance and microbial environment deterioration.The continuous cropping obstacle in the pepper greenhouse soil was much more serious than that in the Chinese chive greenhouse soil,because of the longer time of the pepper growth covered by the plastic greenhouse.By our research it was suggested that the reasonable continuous cropping year threshold should be no more than 2 years for the pepper and Chinese chive greenhouses in the coastal reclamation region.