Abstract：Extrusion Direct Writing (EDW) method can be used to prepare complex shape parts of polymer, metal,
ceramic and composite materials. Due to the advantages of wide adaptability, flexible process and simple equipment,
it plays an important role in additive manufacturing technology. According to the different states and principles
of raw material, it can be divided into Fused Deposition Molding (FDM) and Direct Ink Writing (DIW). In this
paper, the development and application of EDW at home and abroad in recent years were mainly reviewed in the
fields of metals, ceramics, composites and magnetic materials. Furthermore, this review summarized the performance
of parts made by EDW and concluded its advantages and disadvantages. The development and challenge of
EDW technology in the future were proposed out.
2022, Vol. 32 
