[Purpose/significance] The FAIR principle is established as a basic principle worthy of promotion in the UNESCO Recommendation on Open Science. The scope of application of this principle has been extended from data to software, which plays an important role in promoting the sustainable development of open science. [Method/process] Using the methods of literature analysis and Web investigation, this paper combs the background and development pro? cess of FAIR principles for Research Software (FAIR4RS principles), and introduces their main content and practical progress. [Result/conclusion] The importance and uniqueness of scientific software gave birth to the FAIR4RS princi? ples, which have been implemented in the fields of policy, infrastructure and training. As a result, the FAIR4RS princi? ples can ensure the "hand in hand" open sharing of data and software and promote the comprehensive, balanced, coordi? nated and in-depth development of open science.