The invention proposes a compounding formula and manufacture method of a sustained release-type polyocarboxy acid high performance water reducing agent. The compounding formula comprises esterification reaction formula and copolymerization reaction formula. The invention combines the esterification reaction and copolymerization reaction into one to carry on after the improvement of the craftwork.The invention utilizing non-solvent esterification method achieves the esterification reaction in the lower temperature (75 DEG C) through using the compound catalyst. Compared with the two steps, theinvention has better application performance. The invention synthesizes sustained release-type polyocarboxy acid high performance water reducing agent through the adjustment of the reaction conditionand the kind and type of components in each reaction. The product is suitable for the concrete with high request to the control of the slump.