To provide, with a simple configuration, a means and a method for managing product container opening history with which electric load is reduced the opening of a product container is monitored and an opening history can be managed as well.

This container is composed of a second case 2 for arranging a printed circuit board 3 and a first case 1 combined with the second case. A projecting section 4 is formed inside the first case 1, and the printed circuit board 3 is provided with a push-type code output switch 5 arranged in the state of depressing a push-button with the projecting section 4 when the first case 1 and second case 2 are engaged for sealing, a pair of photocouplers 6 arranged in the state for shielding a detected light beam with the projecting section 4, and microprocessor 7 for controlling the printed circuit board 3, monitoring the opening of a product and managing the opening history corresponding to the combination of information on the number of times from the push-type code output switch 5 and container information from the photocouplers 6.