The temperature dependence of the distribution of the magnetic moment in an amorphous magnet, where the exchange interactions and the magnitude of the magnetic moment at O K are random variables, has been investigated. In particular, we considered the two-limiting cases, the one with the fixed spin and the other with the fixed interaction. The mean magnetization is also shown in a figure. The temperature-dependence of the width of the magnetization distribution shows an opposite tendency to each other. It is to be noted that the constant width observed in the experiment can be explained by the simultaneous existence of the both effect.