The invention discloses an indoor tidal wave generator and a using method thereof. The indoor tidal wave generator comprises a tidal wave casing pipe system, a brine tank, a water pump, a connecting system, a half-movable rotation wheel, a motor and a transformer connected with the motor, wherein the tidal wave casing pipe system comprises an outer pipe, a base and a casing pipe installed in the outer pipe; the casing pipe is internally sleeved with an internal overflow pipe; the other end of the internal overflow pipe is sequentially communicated with the brine tank and the water pump; the other end of the water pump is communicated with the outer pipe; the connecting system comprises a support, a fixed pulley and a steel wire rope bypassing the fixed pulley; one end of the steel wire rope is connected to the top of the casing pipe, and the other end of the steel wire rope is connected to the half-movable rotation wheel which is installed at one end of a rotation rod, and the other end of the rotation rod is connected with the motor and the transformer. Each component of the indoor tidal wave generator is reasonable in configuration, is small in occupied space, is simple in structure, is low in manufacturing cost, is reliable in performance, and can be arranged flexibly, and the indoor tidal wave generator can stably generate tidal wave signal conditions with different cycles, amplitudes and water levels, and also can overcome the inhibition of the casing pipe, so that the tidal wave signal is relatively stable.