Since step-growth polymerization (SGP) has quite wide application in many fields

and usually the molecular weight of polymers obtained by SGP is gradually increased

more and more importance has been attached to the synthesis of novel polymer materials via SGP. According to the different types of SGP

the research progress of SGP in recent years

especially the polycondensation used in synthesis of polyesters and etc

the polyaddition of diisocyanate monomers and the polyaddition via click reaction are reviewed. In order to further obtain polymers with fine properties

desirable molecular weight and ideal structure by simple preparation method in the future

it is necessary for the SGP research to strengthen the theoretical study

design the monomers with new structure and fully develop the corresponding new synthetic technologies for STG.