External multifunctional teaching spectrometer

The utility model relates to the field of spectral signal detection equipment, in particular to an external multifunctional teaching spectrometer, which comprises a component-based multifunctional photoelectric detection accessory, an image collector based on an intelligent terminal and an image processor. The multifunctional photoelectric detection accessory is located in a light-proof columnar shell, one end of the columnar shell is a slit-shaped or round-hole-shaped light source incident end, and the other end of the columnar shell is tightly attached to an image collector of the intelligent terminal through an annular suction cup. According to the spectrograph, a fixedly connected external multifunctional photoelectric detection accessory is used as a spectrum collector, a built-in shooting accessory of an intelligent mobile terminal is used as an image collection device, and an application program of the intelligent mobile terminal is used as an image processor, so that spectrum information is extracted,