The invention discloses a multi-
wavelength near-
infrared fluorescence quantum dot detection device, comprising a 
fluorescence scanning module, a translation motor and a 
signal analysis 
processing module. The 
fluorescence scanning module comprises a 
laser diode, a 
light filter, a stepping motor, a chromatic dispersion device and a 
photomultiplier; the 
laser diode is arranged in front of a fluorescence 
quantum dot bar-shaped code, and an emitted light direction of the 
laser diode is vertical with the surface of the bar-shaped code; the 
light filter, the chromatic dispersion device and the 
photomultiplier are sequentially arranged along a reflection fluorescence direction; the translation motor drives the fluorescence scanning module to entirely move; the 
signal analysis 
processing module comprises an A / D (Analogue / Digital) converting module, a 
single chip microcomputer module, a key module and a display module; the A / D converting module carries out A / D conversion on electric signals of the 
photomultiplier, and then sends the converted electric signals into the 
single chip microcomputer module; and a result is sent to the display module after judgment. The detection device can scan the one-dimensional bar-shaped code with the multi-
wavelength near-
infrared fluorescence 
quantum dot to obtain encoded fluorescence information contained in the bar-shaped code, and can carry out analysis comparison and judge whether merchandise is true or false.