A　solid-state　laser　scanning　treatment(SLST)　was　adopted　to　synthesize　anatase/rutile　TiO_2　heterojunction　with　effective　charge　carrier　separation　and　high　surface　adsorption　performances　for　the　photodegradation　of　sulfamethoxazole(SMX).　The　1064　nm　pulsed　fiber　laser　could　in-situ　generate　rutile　zones　on　the　pristine　sheet-like　anatase　crystal　enclosed　by(001)　facets,　which　could　form　the　well-defined　anatase/rutile　interface　to　promote　the　formation　of　dominating　active　species(h~+　and　·OH)　on　the　anatase　zones.　X-ray　absorption　fine　structure(XAFS)　measurements,　low-temperature　electron　paramagnetic　resonance(LT-EPR)　as　well　as　the　density　functional　theory(DFT)　simulation　proved　that　the　oxygen　vacancies(V_O)　could　both　introduce　defective　energy　states　to　promote　light　absorption　and　enhance　the　SMX　adsorption　on　anatase　zones.　Based　on　the　delicately　designed　micro-zones,　the　photodegradation　efficiency　of　the　optimized　catalyst　could　reach　99.3%,　which　demonstrated　～7　times　higher　performance　than　t...