We　report　dependence　of　random　lasing　performance　of　directly　spin-coated　multicrystalline　thin　films　of　an　organic-inorganic　hybrid,　halide　perovskite　CH3NH3PbBr3　(MAPbBr(3)),　on　different　substrates.　It　was　discovered　that　random　lasing　performance　is　strongly　dependent　on　the　surface　energy　properties　of　the　substrate,　which　determine　the　morphology　and　crystallization　properties　of　the　spin-coated　film,　and　will　consequently　determine　its　optical　scattering　and　emission　properties.　Using　indium-tin　oxide　(ITO)-coated　glass,　fused　silica,　and　tricyclo[5.2.1.0(2,6)]　decanedimethanol　diacrylate　(ADCP)-coated　fused　silica　as　the　substrate　materials,　we　compared　the　spectroscopic　response　of　the　random　lasers　and　thus　justified　the　photophysical　mechanisms　involved.　The　modification　of　the　surface　properties　of　the　substrate　enables　controlling　of　the　MAPbBr(3)　crystallization　and　leads　to　the　changing　of　the　random　lasing　properties.　The　discoveries　herein　are　also　important　for　the　construction　of　other　types　of　laser　devices,　where　the　substrate　effects　should　be　considered　during　the　design　and　preparation　of　the　micro-/nano　structures.