The invention relates to a primary-subsidiary shower which comprises a hollow subsidiary shower, wherein an opening is formed on one side of the subsidiary shower; a water outlet spraying component is arranged on the opening; a hydrogen generation device and a hydrogen-generating rate regulating device are arranged in the subsidiary shower; the hydrogen generation device comprises a hydrogen-generating electrode; the hydrogen-generating electrode comprises an anode, a cathode and a proton membrane arranged between the anode and the cathode; the water outlet spraying component comprises a water outlet regulator for regulating water outlet volume; the water outlet regulator is connected with the hydrogen-generating rate regulating device; the water outlet volume is regulated by the water outlet regulator while the distance between the anode and the cathode or the relative area of the anode and the cathode is regulated by the hydrogen-generating rate regulating device. The primary-subsidiary shower is equipped with the subsidiary shower capable of generating hydrogen water; the subsidiary shower can regulate the water outlet volume and the hydrogen-generating rate; the water quality can be effectively guaranteed; the energy can be saved; the skin can be cared; the shower comfort can be promoted.