The utility model discloses a rare earth waste water reclamation and treatment device which comprises a treatment groove and a separation and reclamation groove, a waste water inlet, a neutralizer adding opening and a pH meter are arranged in the treatment groove, the lower end of the treatment groove is connected with the lower end of the separation and reclamation groove through a connecting pipeline with a valve, a filter screen is horizontally arranged in the separation and reclamation groove, a water outlet is formed in the side wall above the filter screen, and a bottom cover with an inverted trapezoid section is arranged at the bottom of the separation and reclamation groove. According to the device provided by the utility model, acidity of waste water can be neutralized, and rare earth in waste water can be recycled, so that the damage caused by direct discharging of untreated rare earth waste water can be decreased.