Abstract：Powder extrusion 3D printing, combined the idea of powder injection molding (PIM) and 3D printing,
is a new 3D printing technology emerged in recent years, which can be used to fabricate metal, ceramic or com‐
posite parts and avoid the disadvantages of PIM and some previous main 3D printing method. The principle of
powder extrusion 3D printing is introduced by contrasting this method to PIM. The features of powder extrusion
3D printing are also summarized compared to PIM and some other 3D printing method. The feedstock of pow‐
der extrusion 3D printing used in the previous main researches, the structure composition of the printer and extru‐
sion ways of the feedstock are present. The development and research situation of the feedstock and printer, and
their effect on products are described. The future research directions aiming at the existing problems of powder
extrusion 3D printing are proposed.
2022, Vol. 32 
