PROBLEM TO BE SOLVED: To provide a puncture aid which can remove or mitigate a mental burden on a patient in performing a puncture by using a puncture device, and the puncture device.SOLUTION: A puncture aid 10 configured to aid in operation to a puncture device 12 for puncturing a skin with a puncture needle 18 includes an action part 42 which acts on the puncture device 12 to activate the puncture device 12 and a delay mechanism 46 which activates the puncture device 12 through the action part 42 after a predetermined period of time elapses from puncture permission operation. The puncture of the skin is not performed simultaneously with the puncture permission operation but is performed at the delayed timing.