The spectral intensity of bremsstrahlung from a pair plasma is calculated with fluctuation theory and particle orbit theory. The predictions given by the two theories agree with each other in the low frequency region. However, the fluctuation theory gives invalid results in the high frequency region because of the failure of the assumption made in the theory. Particle orbit theory shows that in the high frequency region the spectral intensity of bremsstrahlung from a pair plasma depends on the radiation frequency ω through the exponential factor exp(−ℏω/2T), where T is the plasma temperature.