In summary, a stable Eu^III-based metal-organic framework, IMU-106, was constructed using the solvent thermal method. IMU-106 demonstrates good anti-interference capabilities, cycle stability and excellent luminescent performance, which can be used as a sensitive, selective and convenient fluorescence sensor for BzH and its analogues. In particular, the film based on IMU-106 also exhibits a good response to BzH vapor and significant fluorescence weakened to BzH vapor, thus enabling visual detection even at trace levels. The successful exploit of IMU-106-based film provides a simple, convenient, and efficient platform for BzH vapor detection.