55 Myanmar purple jadeite-jades samples were comprehensively analyzed by electron microprobe analysis (EMPA), energy-dispersive X-ray fluorescence (ED-XRF) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, ultraviolet-visible (UV-VIS) spectroscopy and colorimetric methods. The results show that the main chemical compositions of Myanmar purple jadeite-jades are SiO₂, Al₂O₃ and Na₂O, and the contents are close to those of standard jadeite. Chromaticity test analysis showed that the chroma C^* of purple jadeite-jade is mainly controlled by the colour coordinate a^*, while the hue h° is mainly controlled by the colour coordinate b^*. Myanmar purple jadeite-jades can be classified into two types: Type Ⅰ show the main absorption bands at 570 nm which is assigned by chromophore Mn³⁺ and Type Ⅱ with two main absorptions at 540 nm and 610 nm are colored by charge transfer between Fe²⁺-Ti⁴⁺. The absorption peaks of Fe³⁺ existed in both types of Myanmar purple jadeite-jades, and the full iron content in the samples determined their hue and lightness.