Abstract: With the continuous growth in land demand for human activities, an increasing number of infrastructure projects face challenges related to soft clay foundations. Electro-osmosis has proven to be an effective method for strengthening soft clay grounds. However, the formation of soil fissures during electro-osmotic consolidation may reduce its efficiency. To address this issue, this study applied various physical enhancement methods—including preloading pressure, anode follow-up, and graphite powder filling—to improve the electro-osmotic treatment of Boston Blue Clay. Model tests were conducted to measure current and potential distribution, electro-osmotic drainage volume, electro-osmotic flow, shear strength, water content, and pH distribution. Theoretical analysis based on the test results revealed that: (1) The application of preloading pressure helps maintain the at-rest earth pressure condition (k₀) in the soil near the anode, ensuring close contact between the soil and electrode. This maintains a higher voltage across the soil, thereby improving the electro-osmotic consolidation effect on Boston Blue Clay.(2) The anode follow-up method enhances the electro-osmotic drainage between the moving anode and the fixed cathode. Specifically, under 25 V voltage, this method discharged an additional 37.4 mL of water and resulted in lower moisture content near the anode compared to the setup without anode follow-up.(3) The graphite powder filling method increased the effective electro-osmotic flow area, reduced the overall water content of the soil compared to untreated conditions, and raised the overall shear strength of the clay mass by approximately 2.3 times. These findings demonstrate that physically enhanced electro-osmosis can effectively improve the reinforcement of Boston Blue Clay and offers practical guidance for the implementation of similar engineering projects.