There are many auxiliary software for making indoor renderings, including graphic design, 3d design, useful and difficult to use. Say a few I often use:

Three-dimensional cloud design software Kujiale

The 3d cloud design software Kujiale interior design can simply make 3d renderings and floor plans, generate model rooms, and render in 10 second, with high overall design freedom.

Computer aided design

CAD is widely used in plane construction drawings and can be used in the early stage.

Famous image processing software

For example, ps is often used in design, and the drawings will be retouched later, but the foundation is still very demanding.