The invention discloses a spoke type electrical heating oil layer oil displacing method. The method includes: arranging a plurality of auxiliary oil wells around a main oil well, arranging the auxiliary oil wells in a spoke shape around the main oil well, arranging a plurality of firing line electrodes in an oil layer portion in the main oil well, arranging a plurality of zero line electrodes in an oil layer portion in each auxiliary oil well, enabling the firing line electrodes to be connected with a firing line of a power supply, enabling the zero line electrodes to be connected with a zero line of the power supply, then, switching on and powering on, obtaining that electric energy of the power supply can be an alternating current or a direct current. The invention provides a technical method of mildly heating an oil layer to form electrolysis oil displacement and ionization oil displacement, and due to the fact that a spoke type electrical heating technology is utilized to mildly heat the oil layer, an electrode is prevented from coking, heating action of electrolysis field stress and ionization field stress is fully used, flowing capacity of crude oil is increased, and total recovery rate and oil yield of thickened oil and hypercoagulability crude oil are improved. According to the spoke type electrical heating oil layer oil displacing method, the investment is less, the oil layer is mildly heated, the electrode is prevented from coking, and the total recovery rate and the oil yield of the thickened oil and the hypercoagulability crude oil are improved.