**6. Conclusions and Perspectives**

Overall, this Special Issue collected recent advances in orchid biochemistry, including original articles and reviews. It provides in-depth insights into the biology of pigment and flower scent formation, bioactive compounds, and plant-microbial interaction as well as the biotechnology of PLBs. With the rapid progress of high-throughput technologies and integrative omics, scientists may have more opportunities to reveal the secret of orchid biology in the future.

**Funding:** This research received no external funding. **Conflicts of Interest:** The author declares no conflicts of interest.
