The discussion on the influence of water Radon observation caused by water sample processing method;

Analysis to the observational data of water radon and water mercury in Wang Third Well;

Observational environment of water radon in NO.6 well in Handan and analysis of earthquake instances;

It is expounded that the excessive groundwater mining brings some trend changes of radon in groundwater.

The normal yearly variation characteristics of Radon in groundwater from the well No.

Variation trend and yearly variation characteristics of Radon in groundwater from the well No.

Discussion on Relationship between Middle-team Anomalies of Radon in No.22 Well at Wushan Station and Earthquakes;

Relation between High Value Anomaly of Radon at Qiyan Spring of Dingxiang,Shanxi and Seismicity of North China;

Analysis to the interference on radon of hot water well in Qicun village,Xinzhou,Shanxi Province;

Analysis of Reflect Ability of Hydro-radon for Near Earthquakes in Tainei Well;

Based on the methods derived from the project of "Study on anomaly recognition for hydrogeochemical parameters and prediction methods",hydro-radon data since 1983 in Hebei are processed in the whole time and space range.

This paper expounds the characteristics of radon water distribution,water anomalies andtheir relations to uranium mineralization in various structural layers in zhejiang,Jiangxi,Hunan,Guangdong and Guangxi provinces in Southeast of China.