The invention belongs to building engineering technology field, and discloses a wireless remote monitor civil engineering building monitoring system, which comprises a fiber sensor, a data acquisition and transmission system, a data control and processing system, a data management system, a data output system and an alarm system; the data acquisition and transmission system comprises a fiber sensing multiplex network acquisition subsystem and a fiber sensing signal demodulation data transmission subsystem; the data control and processing system employs a one-chip microcomputer for controlling; the data management system comprises a log record system and a memory; the data output system comprises a display, a printer, a communication port and an outer memory; the alarm system comprises an alarm lamp system, an alarm device system and a preset threshold value monitoring system. According to the invention, important physical indexes like seepage humidity, residual strain degree, crack displacement, viscosity, pressure, temperature and hardness in a reinforced concrete structure can be detected; and networking and remote monitoring can be realized.