A step-shaped endometrial curette is provided. The step-shaped endometrial curette includes a handle, a curetting bar, and a collection cup. The handle is connected to a first end portion of the curetting bar. A second end portion of the curetting bar has a distal end formed with a plurality of mushroom-shaped curetting plates for removing endometrial tissues by scraping. The collection cup is slidably connected between the first end portion and the mushroom-shaped curetting plates and serves to hold the removed endometrial tissues. As the mushroom-shaped curetting plates are arranged stepwise, and the curetting bar is freely flexible to adapt to the internal shape and angles of the uterus, specimens can be taken from inside the uterus without dilatation of the cervix or anesthesia. Besides, the collection cup can collect all the removed endometrial tissues to enable sufficient and thorough pathological examination.