A sperm collecting device is provided. The sperm collecting device includes a main body, a cap that is separately connected to a first end of the main body, a hanger that is rotatably connected to a second end of the main body and a soft body that is disposed in the main body and having a penis passage. The sperm collecting device further includes a pressing unit. The pressing unit includes a pressing element and a pressing plate, wherein the pressing element is disposed at the main body, and the main body has a pressing opening disposed corresponding to a pressing portion of the pressing element. The pressing plate is disposed between the main body and the soft body corresponding to the pressing opening.
