Iron-based superconductors have attracted extensive attention from scientists due to their high critical current density, low anisotropy and extremely high upper critical magnetic field since it was discovered. It has excellent application prospects and is also one of the keys to study the mechanism of high temperature superconductivity. As the simplest iron-based superconducting material, the 11 system iron-based superconductor has become a research hotspot in the field due to its characteristics of no toxic element As and sensitivity to doping. In this paper, the research progress of the practical application of 11 system iron-based superconducting materials is reviewed from two perspectives: wire and strip, coated conductor and thin film.