The L3201 LED fluorescence microscope is a multi-purpose optical instrument that uses an infinitely far flat field achromatic fluorescent objective lens without magnification chromatic aberration and a large field eyepiece. The optical system produces clear images and a wide field of view. The excitation light source adopts a high-power high brightness monochrome LED module group, and the transmission light source adopts a high-power high brightness white LED module. The lighting brightness is adjustable, the lighting device has low power consumption, long service life, and safe and comfortable operating performance. It is an ideal instrument for research, disease prevention, and immune testing in the field of life sciences, and can be used by scientific research, universities, medical and disease control departments.