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Papandayan Volcano is an active volcano located near Garut Regency, West Java, Indonesia. Magnetotelluric (MT) data acquisition was carried out in the Crater Mas area in 2009 with a total of 13 measurement points. This data acquisition was performed using a remote reference method to obtain better data quality by reducing measurement noise. The geomagnetic data acquisition was carried out in January 2019 in the crater area using a set of G-856AX Memory MagTM Proton Precision Magnetometer (PPM) with a total of 259 points. The result of MT modeling shows that the structure could be divided horizontally into two layers, namely the conductive layer at a depth up to 1km and the resistive layer at a depth of more than 1km from the surface. Conductive layer located near the surface may be interpreted as the presence of water or clay mineral. The two-dimensional forward modeling of geomagnetic result shows that the rocks with relatively low susceptibility values below the surface causes the anomaly at a depth of 30 to 100 meters. The low susceptibility values of the rocks might have been caused by thermal demagnetization due to high temperatures.