The invention relates to an intelligent control friction electrical storage device of a bicycle. The intelligent control friction electrical storage device of the bicycle consists of a control module, an electromagnetic valve, a rotating shaft, a friction device, a lighting lamp, a photosensitive inductor, a swing arm, an electromagnetic coil and a spring, and is characterized in that a 1# output end of the control module is connected with the lighting lamp; a 2# output end of the control module is connected with the electromagnetic valve; a 3# output end of the control module is connected with a lithium battery; a signal end of the control module is connected with a switch; the friction device is connected with an input end of the control module; the rotating shaft is extended from the electromagnetic valve; the friction device is fastened on the rotating shaft. When the photosensitive inductor detects that the sky brightness is less than 100 cd / m<2>, the control module can automatically turn on a power supply of the lighting lamp and can automatically switch on and off the electromagnetic valve according to the capacity of the lithium battery, so that circulating work of the friction device is realized. The intelligent control friction electrical storage device of the bicycle has the benefits that by adoption of the structure, stable power supply of a lighting system is achieved, and the friction device can be automatically connected.