A vehicle front blind spot detection and warning system comprising: a monitoring element mounted to a front portion of a host vehicle for monitoring the condition of a current lane and a neighboring lane in front of the host vehicle, the monitoring element being configured to capture a front image and/or video information, and to define a detectable blind spot zone in a front area of the neighboring lane; and a controller connected with the monitoring element for receiving detected information from the monitoring element, and connected with a system ECU to acquire information about the running state of the host vehicle; wherein the controller is configured to, in a standby state, obtain the speed of the vehicle via the ECU, and determine the width of the current lane from image and/or video information captured by the monitoring element, and enter into a monitoring state from the standby state when it is determined by the controller that: (a) the obtained speed of the host vehicle is in a predetermined speed range of 40 km per hour to 80 km per hour; and (b) the determined width of the current lane is not less than a predetermined width level of 3 meters; and wherein the controller is configured to determine there is a blind spot risk in changing lanes and activate blind spot warning on changing lanes when: there is a vehicle in front of the host vehicle in the current lane which blocks the line of sight of the driver of the host vehicle; the speed of the front vehicle in the current lane is lower than a speed level which is determined based on the speed of the host vehicle; in the neighboring lane, there is a vehicle at least partly in the detectable blind spot zone of the monitoring element; and the speed of the vehicle in the neighboring lane is substantially equal to or lower than the speed of the front vehicle in the current lane. a monitoring element mounted to a front portion of a host vehicle for monitoring the condition of a current lane and a neighboring lane in front of the host vehicle, the monitoring element being configured to capture a front image and/or video information, and to define a detectable blind spot zone in a front area of the neighboring lane; and a controller connected with the monitoring element for receiving detected information from the monitoring element, and connected with a system ECU to acquire information about the running state of the host vehicle; wherein the controller is configured to, in a standby state, obtain the speed of the vehicle via the ECU, and determine the width of the current lane from image and/or video information captured by the monitoring element, and enter into a monitoring state from the standby state when it is determined by the controller that: (a) the obtained speed of the host vehicle is in a predetermined speed range of 40 km per hour to 80 km per hour; and (b) the determined width of the current lane is not less than a predetermined width level of 3 meters; and (a) the obtained speed of the host vehicle is in a predetermined speed range of 40 km per hour to 80 km per hour; and (b) the determined width of the current lane is not less than a predetermined width level of 3 meters; and wherein the controller is configured to determine there is a blind spot risk in changing lanes and activate blind spot warning on changing lanes when: there is a vehicle in front of the host vehicle in the current lane which blocks the line of sight of the driver of the host vehicle; the speed of the front vehicle in the current lane is lower than a speed level which is determined based on the speed of the host vehicle; in the neighboring lane, there is a vehicle at least partly in the detectable blind spot zone of the monitoring element; and the speed of the vehicle in the neighboring lane is substantially equal to or lower than the speed of the front vehicle in the current lane. there is a vehicle in front of the host vehicle in the current lane which blocks the line of sight of the driver of the host vehicle; the speed of the front vehicle in the current lane is lower than a speed level which is determined based on the speed of the host vehicle; in the neighboring lane, there is a vehicle at least partly in the detectable blind spot zone of the monitoring element; and the speed of the vehicle in the neighboring lane is substantially equal to or lower than the speed of the front vehicle in the current lane.