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The flexible ultrathin all-solid-state supercapac-itors with good electrochemical and mechanical perfor-mance were fabricated by the facile methods. The single-wall carbon nanotubes (SWCNTs)–polyaniline (PANI) film electrodes and poly(vinyl alcohol) (PVA)/H3PO4 electrolyte film were prepared by spray-printing and spin-coating strategies, respectively. Thus, the thickness of a supercapacitor is only 8.4μm. When the mass ratio of SWCNT to PANI is 1:1, the tensile strength and Young’s modulus of the electrode are 10.9 and 655 MPa, respec-tively. The interior contact resistance of the supercapaci-tors based on this electrode is only 15–30Ω. Furthermore, the specific capacitance of this electrode can reach about 355.5 F·g-1, and the supercapacitor based on this electrode maintains 87.2％ of its initial specific capacitance over 5000 charging/discharging cycles. Moreover, the superca-pacitor shows an excellent electrochemical stability at different bending states. Therefore, the all-solid-state supercapacitors prepared by our strategies would meet the demands of wearable, lightweight, and compact energy storage devices.