Double-insurance structure of keyboard hot-pressing point

The invention provides a double-insurance structure of a keyboard hot-pressing point, which comprises an upper layer circuit, a lower layer circuit, keyboard keys, a spell-out circuit and the hot-pressing point, wherein the upper layer circuit and the lower layer circuit are connected with each other through the keyboard keys; the lower layer circuit is connected with the spell-out circuit; and the upper layer circuit is connected with the spell-out circuit through the hot-pressing point and is also connected with the spell-out circuit through an in-parallel hot-pressing point. By the structure, a keyboard can be operated in a high-temperature environment for a long time and can still be operated normally after a hot-pressing overlap position is stretched, so that the service life of the keyboard can be prolonged to a great extent; simultaneously, production processes are not increased in the design, and the original production efficiency is not influenced, so that the structure is extremely suitable for a computer user who works under a high-temperature environment.