Measurements of magnetic susceptibility and electrical resistivity have been made on the antiferromagnetic compound MnSe in a temperature range covering both of magnetic ordering and paramagnetic regions. The curves of the susceptibility and the resistivity obtained show a large thermal hysteresis and a sharp transition at the Neel temperature. The cooling and warming curves appear to be influenced in some way by the previous thermal history of the sample. The value of the magnetic disorder resistivity in the cooling process is 1.5 x 10^4Ωcm.