Abstract: A multi-color chemiluminescent light device is disclosed. The device emits different colors from different construction parts of the flexible outer container through varying the fluorescer types or incorporation ratios in different construction parts. Firstly, the fluorescer is incorporated into the material for forming the outer container so that the outer container will include the fluorescer after being injection molded. If there are two fluorecers respectively incorporated into the outer container and the hollow plug, the whole chemiluminescent light device will emit two lights. Consequently, the outer container can determine the color of light emitted by the chemiluminescent light device to have one single color or multiple colors.