A sperm collector is provided. The sperm collector includes an insert having a penis insertion passage. The sperm collector also includes a container having an outer shell forming an inside chamber. The outer shell has at least one opening. The inside chamber is configured to accommodate the insert. The sperm collector also includes a top end cover capable of being engaged with the container. The sperm collector further includes an elastic pressing unit disposed on the outer shell and coupled to the insert through the opening on the outer shell. The elastic pressing unit is configured to transmit pressure to the insert through the opening on the outer shell.