The invention relates to a Chinese herbal 
medicine brewing tea for treating old people 
constipation, and a preparation method thereof, belonging to the technical field of sanitary and medical services. For the purposes of simplicity, convenience and cheapness and good effect, on the basis of ancient formula, the basic prescription comprising 
semen cassia, 
herba cistanche, radix astragali, honey and the like is selected through optimization. Supplementary are added along with symptoms on the basis of the basic formula, wherein 
angelica sinensis and red dates are supplemented for treating deficient 
constipation; radix 
codonopsis and 
cynomorium songaricum are supplemented for treating qi 
constipation; radix scutellariae and dried radix rehmanniae are supplemented for treating heat constipation; and longan pulp and 
radix rehmanniae preparata are supplemented for treating cold constipation. The preparation method comprises the steps of weighing according to the proportion of active ingredients supplemented along with the symptoms in the components in the basic formula except for honey, crushing the accurately weighed 
semen cassia, 
herba cistanche and radix astragali, then filtering with a 100-mesh 
sieve; and then evenly mixing the sieved mixture with the honey to prepare the 
brewing tea for treating old people constipation, and 
drying and packaging to obtain the finished product 
brewing tea for treating constipation. The Chinese herbal 
medicine brewing tea has the characteristics of being small in 
medicine administration amount, low in price, good in effect, accurate in 
curative effect, abundant in medicine source, simple to prepare, short in curative period, low in cost, and safe and reliable.