This study, investigated acoustic environment in two types of interim housing, renovated military barracks and prefabricatedsteel houses, in an interim housing camp. Researchers reinforced the sound insulation capacity of the partition wall in three stages: 1. Enclose the space above the partition wall, 2. Reinforce one side of the partition wall, 3. Reinforce both sides of the separating wall. In each stage, once the reinforcement is completed, researchers measure the sound insulation capacity in the built environment. After measurement and analysis, measured-data indicated that the sound insulation before reinforcement was 15 dB in renovated military barracks and 21 dB in prefabricated steel houses. The sound insulation after reinforcement in reconstructed military camps was 24 dB, 29 dB and 35 dB for each stage respectively. The sound insulation in prefabricated houses was 16 dB, 33 dB and 39 dB for each stage. This research quantified the sound insulation capacity of different construction methods in interim housings used during post-Morako period. It provides a reference for future construction of interim housing of good acoustic environment.