Large truck blind area warning system

A dead zone warning system for a large truck comprises a storage battery installed on the truck and an induction warning unit electrically connected with the storage battery, and the induction warning unit is formed by connecting a plurality of induction warning circuits installed at the front position, the rear position, the left position and the right position of the truck in parallel. Each induction warning circuit is composed of an infrared induction switch and a warning lamp connected with the infrared induction switch in series, and the induction warning circuit is electrically connected with an electric horn. The lorry blind area monitoring device can monitor blind areas around a lorry in all directions, when pedestrians, electric vehicles or motorcycles pass through the blind areas, the infrared induction switches corresponding to the blind areas are switched on to switch on a circuit so as to enable the warning lamps to flicker, and meanwhile the electric horns give out warning sound, so that the ped