Photocatalytic micromotors that convert light energy into mechanical energy have garnered increased interest due to their fast photoactivation, and potential for precise control and manipulation. This feature article provides key insights into the design of photocatalytic micromotors by using single semiconductors, and heterostructures. It also highlights the different strategies to develop efficient light-driven micromotors by minimizing electron-hole pair recombination and improving charge transfer among components. The remaining challenges and possible solutions are also discussed.