Abstract: Crystalline porous materials combine periodic structures, designable pore environments, tunable electronic structures, and rich spin/charge degrees of freedom, making them ideal platforms for exploring molecular quantum devices, chemical sensing, and low-dimensional quantum phenomena. However, these materials often exist as micron- or even submicron-sized single crystals and are frequently sensitive to air, solvents, electron-beam irradiation, or thermal processing, which makes it challenging to fabricate high-quality devices using conventional micro- and nanofabrication methods. To address this challenge, this report focuses on the fabrication of submicron single-crystal devices based on crystalline porous materials and introduces low-damage device-fabrication strategies tailored for single-crystalline porous materials. By achieving controllable electrode integration on individual submicron crystals, this approach may enable direct correlations among crystal structure, pore environment, radical/metal centers, spin dynamics, and charge-transport behavior. This research not only provides a methodological foundation for single-crystal electrical measurements, but also supports future studies of molecular quantum sensing, electronic spin control, heterostructures, and emerging quantum phenomena. Ultimately, it offers a technical pathway for transforming crystalline porous materials from synthetic targets into measurable, controllable, and integrable porous quantum devices.