Printed　electronics　is　an　electronic　device　manufacturing　technology　that　combines　printing　technology　and　high-end　conductive　materials.　Compared　with　traditional　electronic　manufacturing　methods,　it　does　not　rely　on　substrate　materials,　can　be　manufactured　in　large　areas　and　in　batches,　reduce　manufacturing　costs,　and　is　green　and　other　advantages.　Printed　electronics　technology　can　prepare　sensors,　flexible　display　devices,　radio　frequency　identification　tags,　printed　circuit　boards,　etc.　This　article　mainly　introduces　the　research　progress　in　these　four　fields.　The　development　of　Printed　electronics　should　focus　on　strengthening　the　research　on　printable　electronic　materials　and　printing　substrates.　Performance　enhancements　will　further　expand　the　range　of　printed　electronics　applications.　©　2021,　The　Author(s),　under　exclusive　license　to　Springer　Nature　Singapore　Pte　Ltd.