The influence of bending loss on distributed fiber Raman temperature measurement demodulation is studied, the demodulation concept of the single-channel and dual-channel demodulation algorithms is theoretically investigated, and tests are used to confirm the viability of the two demodulation algorithms for temperature demodulation of multibend loss fibers. The experimental results suggest that the temperature demodulation of the fiber with bending loss may be achieved using the two demodulation algorithms. However, the single-channel demodulation algorithm’s accuracy and volatility are superior to the two-channel demodulation algorithm for the fiber close to the point of bending loss.