sudo vim /usr/share/applications/pycharm.desktop         

                                                          
[Desktop Entry]

Type=Application

Name=Pycharm

GenericName=Pycharm3

Comment=Pycharm3:The Python IDE

Exec="/home/tao/pycharm-2020.2.3/bin/pycharm.sh" %f

Icon=/home/tao/pycharm-2020.2.3/bin/pycharm.png

Terminal=pycharm

Categories=Pycharm;

sudo chmod +x /usr/share/applications/pycharm.desktop

就可以了