The papermaking waste water of straw-pulp type is the most serious contaminate to environment and industrial water pollute difficult to handle. Using purificant made by zeolite from Shangtianti of Xinyang, the authors treated papermaking waste water and got good result. The experience obtained provides a new idea for purifying papermaking waste water.The preparation of purificant is carried out in accordance with the following process: dip the 80 mesh zeolite-powder into water; after bringing about hydrolysis, the aluminate and ferrite with polynuclear, polyhydroxy and high electropositivity can be formed and are mixed in a certain propor- tion. At the same time, add moderate amounts of assistant preparation of reaction and fully stir them. Then this mixed substance is put into a tank with temperature 200~250℃, and reacts chemically for a certain time to form sintered blocks. Finally, grind the loose sintered blocks until they become 80 mesh size, forming zeolite purificant. This purificant is nonpoisonous,scentless, stable chemically, and its preparation technique is simple, without letting tail dregs.At the proportion of 1∶900 this purificant is used to treat the terminal waste water of the Maping Papermaking Works, Hubei, according to the following technological process: cut off the terminal waste water→add purificant→stir→form cotton_like coagulate→precipitate→drain off the upper clear water→further precipitate→filter with pressure→retrieve filtered dregs. In the small test the process can reduce CODcrof waste water from 3500 mg/L to about 450 mg/ L; in the large test it can also reduce CODcrto 890~960 mg/L. Therefore, the technological process has reached the 2nd or 3rd Grade of the State Industrial Letting Criteria (GB 3544_ 92). The same effect has been realized in using the purificant to treat the terminal waste water of the following papermaking words: Hannan in Wuhan, Jingzhou and Yunxian in Hubei, Xinyang in Henan, and Muping in Shandong. These tests show that the zeolite purificant has good prospects in treating waste water; nevertheless, comprehensive studies are needed to strengthen the cotton_like coagulate.