The taxi roof light box is a combination of outdoor advertising and roof light. It has the characteristics of “Moving, Multi, Bright and New”. It is generally composed of two parts: the outer casing and the internal light source. Usually, acrylic or acrylic inlaid metal is used to make a taxi top light box. The shape of the light box can be made into a traditional type or a shape provided by the customer. The installation method can be divided into a magnet ceiling lamp,and the connection between the light box and the roof is a magnetic connection through the suction cup structure;The suction cup chute,the light box and the suction cup is connected by push-pull and pull-out of the suction chute; The bracket installation,the bottom of the roof lamp is fixed to the bracket by screws on the roof mounting bracket.