Hall effect in the ferrimagnetic systems of rare earth (R) and cobalt (Co) such as Gd2Co7 and its temperature dependence, especially near compensation temperature, is investigated both theoretically and experimentally. The polarity of the Hall voltage in these materials is reversed at the compensation temperature, and it is similar to the reversal in optical Kerr effect. The anomalous part of the Hall voltage is separated theoretically into two independent parts; one is of R and the other of Co. The contribution of R to the observed Hall voltage is considered to be several hundreds times larger than that of Co in the ferrimagnetic temperature region by taking the quite large spin‐orbit interaction of R into account, and the reversal of the Hall voltage at the temperature is explained essentially in terms of the anomalous Hall effect originated dominantly from R. On the other hand, the variation of Kerr rotation with temperature comes mainly from Co in the visible region.