We have prepared a bulk Y0.8Ho0.2Ba2Cu3Oysuperconductor by the powder melting process method and investigated its magnetization curves and magnetic relaxation in the temperature range 55–77 K at different fields. TheJcvalues at a certain temperature and field is estimated by Bean’s model. It is found thatJcdecreases with the magnetic field according to a power law, whereas it drops exponentially with temperature. The dependence on temperature of the maximum diamagnetization fieldHpand the remanent magnetizationMremis discussed. The magnetic relaxation indicates that the magnetizationMvaries logarithmically with time. The relaxation ratedM/d ln tis also studied.