Abstract: Disclosed are a method for automatic connection between a smart device and a router, a corresponding router and smart device, which belong to the technical field of wireless communications. The method for automatic connection between a smart device and a router include the following. The router receives a trigger instruction triggered by a key arranged on the router. In response to the trigger instruction, a hidden wireless communication function of the router is enabled. If it is detected within a preset period of time that the smart device connects to a communication link corresponding to the hidden wireless communication function, network connection information is transmitted to the smart device to trigger connection of the smart device to a network connected to the router. By improving the method for connecting between a smart device and a router, it is possible to achieve automatic connection between the smart device and the router.