A non-contact electric power transmission system, comprising: first and second vehicles (10A, 10B); and a charging station, said charging station including a plurality of electric power transmission portions including first and second electric power transmission portions (700A, 700B), which can transmit electric power to the vehicles (10A, 10B) in a non-contact manner, said electric power including weak electric power for positioning and full-scale electric power for charging, wherein said weak electric power is lower than said full-scale electric power, and an electric power transmission control unit controlling electric power transmission from said plurality of electric power transmission portions (700A, 700B), characterized in that said electric power transmission control unit is configured to control any one of said first and second electric power transmission portions (700A, 700B), which is not transmitting said full-scale electric power, to transmit weak electric power when said electric power transmission control unit receives a signal from said first vehicle, which signal is for requesting weak electric power transmission, and said electric power transmission control unit is configured to select one of said electric power transmission portions for electric power transmission, wherein when said electric power transmission control unit receives an occupation signal from said second vehicle, which occupation signal allows determination that a parking position of said second vehicle corresponds to said first electric power transmission portion when said second vehicle has already parked at a position where the second vehicle can receive electric power from said first electric power transmission portion and when said second vehicle receives weak electric power from said first electric power transmission portion, said electric power transmission control unit is configured to control said second electric power transmission portion to transmit weak electric power for positioning said first vehicle with said second electric power transmission portion. first and second vehicles (10A, 10B); and a charging station, said charging station including a plurality of electric power transmission portions including first and second electric power transmission portions (700A, 700B), which can transmit electric power to the vehicles (10A, 10B) in a non-contact manner, said electric power including weak electric power for positioning and full-scale electric power for charging, wherein said weak electric power is lower than said full-scale electric power, and an electric power transmission control unit controlling electric power transmission from said plurality of electric power transmission portions (700A, 700B), a plurality of electric power transmission portions including first and second electric power transmission portions (700A, 700B), which can transmit electric power to the vehicles (10A, 10B) in a non-contact manner, said electric power including weak electric power for positioning and full-scale electric power for charging, wherein said weak electric power is lower than said full-scale electric power, and an electric power transmission control unit controlling electric power transmission from said plurality of electric power transmission portions (700A, 700B), characterized in that said electric power transmission control unit is configured to control any one of said first and second electric power transmission portions (700A, 700B), which is not transmitting said full-scale electric power, to transmit weak electric power when said electric power transmission control unit receives a signal from said first vehicle, which signal is for requesting weak electric power transmission, and said electric power transmission control unit is configured to select one of said electric power transmission portions for electric power transmission, wherein when said electric power transmission control unit receives an occupation signal from said second vehicle, which occupation signal allows determination that a parking position of said second vehicle corresponds to said first electric power transmission portion when said second vehicle has already parked at a position where the second vehicle can receive electric power from said first electric power transmission portion and when said second vehicle receives weak electric power from said first electric power transmission portion, said electric power transmission control unit is configured to control said second electric power transmission portion to transmit weak electric power for positioning said first vehicle with said second electric power transmission portion.