The subjects were 486 cases aged all under 1. 5 -year -old. Their fresh stool were observed closely by pH value

lead acetate （la） method and chromatography. Standards for lactose intolerant （LI） included pH < 6

la 2 +

chromatography +. 148 cases were assigned to 3 groups. Group I was treated with regular western drug: group II. regular western drug plus delactose diet; group III

traditional Chinese remedies with Zhixie I

Zhixie II administered to acme （damp - heat）

chronic （persisting） types

and observed for 5 and 10 days respectively. Results showed that the incidence of LI in 486 cases infantile diarrhea was 54. 73%

of them

the incidence of chronic type being 72. 73%. For acute diarrhea LI. there was no significant difference among its group （P>0. 05）. While for the chronic group

the effects in II

III were superior to I （all P<0. 05）. Delactose diet yielded good effect for both types of LI. For chronic persisting LI. traditional Chinese remedies can rapidly ameliorate vomiting

diarrhea and abdominal distention with satisfactory effect.