Designing in your native language improves workflow speed, reduces design errors, and makes complex technical tools much easier to navigate. If you are using Autodesk AutoCAD 2017, you do not need to purchase a completely separate software license just to change the user interface language. Instead, you can download and install an official AutoCAD 2017 Language Pack.
After installing one or more language packs, you do not need to uninstall them to switch back to English or another language. Autocad 2017 Language Pack