The layout method for Radio Frequency/Monolithic Microwave Integrated Circuit (RF/MMIC) is one of the key components in achieving MMIC design automation. Our work proposes a multi-stage progressive automated layout framework addressing MMIC layout challenges under 0.25 μmGaAs pHEMT technology. This framework employs dimensionality reduction from unsupervised learning, integrates practical layout design rules, and achieves automated layout through analytical optimization methods. Applied to multiple cases including filters, low-noise amplifiers (LNAs), and power amplifiers (PAs), the method successfully generated manufacturable layouts; the process achieves end-to-end automation from placement to routing, producing layouts that are verified to be DRC-clean. Simulation-verified results demonstrate comparable performance to manual designs while achieving ≥10× speedup over conventional methods. We believe this work contributes valuable attempts toward automated MMIC layout generation and advances progress in MMIC design automation.