The 40X-1000X trinocular compound LED microscope provides both darkfield and brightfield microscope system. The darkfield compound microscope features an optical system for simultaneously observing images through eyepieces and an adjustable trinocular port. The compound microscopy includes a 45 degree inclined 360 degree swiveling trinocular head, body frame, revolving quadruple nosepiece, a pair of widefield eyepieces WF10X/18, four DIN achromatic objectives: 4X, 10X, 40X (spring), 100X (spring,oil), large double layer mechanical stage, LED illumination system and a brightfield Abbe NA1.25 condenser & an oil darkfield NA1.36-1.25 condenser. The LED lamp can be replaced by yourself. The trinocular port is easy to mount photo or video capability. All lenses are made of high quality optical glass. The high resolution image in the field of view is crystal clear and will satisfy the demands of professionals. This trinocular microscopy is good for teaching, demonstration, clinical examination and research purpose.