Abstract:Criterion of Grouting Technology in Earth-dam Body(SD266–88) is divided into two parts,i.e. filling grouting and spilt grouting. But it puts more emphases on the split grouting technique. This technique is based on the Bai¢s split grouting. With the development of split grouting,grouting theory and construction technology have broken through the restriction of present technique criterion. New construction skills of split grouting such as Zhang¢s split grouting,repeating split and filling grouting and a novel derivative split grouting come forth. The origination of the split grouting,curtain shape and durability,grouting pressure calculation,physical model of the movement law of serum,time and interval of grouting,etc. are brought forward. All these ought to be supplemented to the criterion. Therefore,detailed suggestions to the modification of the current criterion are advised. Firstly,some factors should be supplemented,such as joint segment,earth dam foundation,prevention of channel leakage,foundation concretion grouting in the Bai¢s split grouting,as well as the contents of Zhang¢s split grouting. Secondly,it is emphasized that grouting tests should be carried out to make sure that the grouting to embankment project and slope of earth dam per hole are not less than three times,grouting interval is not less than three days,and the obtained grouting pressure ought to multiply a coefficient 1.1–1.3. Thirdly,it is emphasized that the grouting effect must be examined by some methods,such as digging exploratory well,increasing grouting ration,establishing supervision system,and so on.