A radio communication system comprising: a first base station configured to transmit a first radio signal; a second base station configured to transmit a second radio signal; at least one radio terminal capable of receiving the first and second radio signals; and control means for controlling a transmission power of the second radio signal by the second base station so that a reception quality of the second radio signal exceeds a second standard at a position of the at least one radio terminal where a reception quality of the first radio signal is lower than a first standard based on a measurement result of a reception quality of the first radio signal by the at least one radio terminal, wherein the at least one radio terminal is adapted to measure the reception quality of the second radio signal in addition to the first radio signal, the control means is configured to control the transmission power of the second radio signal based on a difference between the reception quality of the second radio signal and the reception quality of the first radio signal measured by the at least one radio terminal, the control means is configured to obtain a representative value obtained by accumulating a plurality of calculation values of a difference of reception qualities of at least one position of the at least one radio terminal where the reception quality of the first radio signal exceeds the first standard and the reception quality of the second radio signal exceeds the reception quality of the first radio signal, and the control means is configured to control the transmission power of the second radio signal to decrease the transmission power of the second radio signal according to the representative value. a first base station configured to transmit a first radio signal; a second base station configured to transmit a second radio signal; at least one radio terminal capable of receiving the first and second radio signals; and control means for controlling a transmission power of the second radio signal by the second base station so that a reception quality of the second radio signal exceeds a second standard at a position of the at least one radio terminal where a reception quality of the first radio signal is lower than a first standard based on a measurement result of a reception quality of the first radio signal by the at least one radio terminal, wherein the at least one radio terminal is adapted to measure the reception quality of the second radio signal in addition to the first radio signal, the control means is configured to control the transmission power of the second radio signal based on a difference between the reception quality of the second radio signal and the reception quality of the first radio signal measured by the at least one radio terminal, the control means is configured to obtain a representative value obtained by accumulating a plurality of calculation values of a difference of reception qualities of at least one position of the at least one radio terminal where the reception quality of the first radio signal exceeds the first standard and the reception quality of the second radio signal exceeds the reception quality of the first radio signal, and the control means is configured to control the transmission power of the second radio signal to decrease the transmission power of the second radio signal according to the representative value.