An LED testing apparatus comprising: a first lighting unit configured to generate first light and to irradiate the first light onto a white LED, the first light configured to excite a fluorescent material included in an encapsulant coating the white LED to emit light having a longer wavelength than the first light, wherein the first light is an ultraviolet ray; a second lighting unit configured to generate second light having a longer wavelength than the first light to irradiate the second light onto the white LED, wherein the second light is a visible ray; an image acquisition unit configured to acquire a first LED image using the light emitted from the fluorescent material and a second LED image using the second light reflected off the white LED to acquire images of the white LED; and an LED state determination unit configured to determine whether the white LED is acceptable or defective using the first and second LED images; wherein the LED state determination unit is configured to extract first edge lines from the first LED image and second edge lines from the second LED image by setting a product region for each of the first and second LED images, reducing noise in the respective LED image, performing a tracing process on the respective LED image, and performing a threshold process on the respective LED image, the LED state determination unit is configured to determine whether the white LED is acceptable or defective by performing uncoating detection by comparing the first edge lines with the second edge lines to determine whether or not the white LED is coated with the encapsulant, and the LED testing apparatus further comprises a color filter, wherein the color filter is located in a filtering region set beforehand when the first lighting unit is switched on so that the light emitted from the fluorescent material passes through the color filter, and is located in a region other than the filtering region set beforehand when the second lighting unit is switched on, the fluorescent material being yellow phosphor and the color filter being a yellow filter, and the first lighting unit is configured to be switched on when the second light is switched off and the second lighting unit is configured to be switched on when the first light is switched off. a first lighting unit configured to generate first light and to irradiate the first light onto a white LED, the first light configured to excite a fluorescent material included in an encapsulant coating the white LED to emit light having a longer wavelength than the first light, wherein the first light is an ultraviolet ray; a second lighting unit configured to generate second light having a longer wavelength than the first light to irradiate the second light onto the white LED, wherein the second light is a visible ray; an image acquisition unit configured to acquire a first LED image using the light emitted from the fluorescent material and a second LED image using the second light reflected off the white LED to acquire images of the white LED; and an LED state determination unit configured to determine whether the white LED is acceptable or defective using the first and second LED images; wherein the LED state determination unit is configured to extract first edge lines from the first LED image and second edge lines from the second LED image by setting a product region for each of the first and second LED images, reducing noise in the respective LED image, performing a tracing process on the respective LED image, and performing a threshold process on the respective LED image, the LED state determination unit is configured to determine whether the white LED is acceptable or defective by performing uncoating detection by comparing the first edge lines with the second edge lines to determine whether or not the white LED is coated with the encapsulant, and the LED testing apparatus further comprises a color filter, wherein the color filter is located in a filtering region set beforehand when the first lighting unit is switched on so that the light emitted from the fluorescent material passes through the color filter, and is located in a region other than the filtering region set beforehand when the second lighting unit is switched on, the fluorescent material being yellow phosphor and the color filter being a yellow filter, and the first lighting unit is configured to be switched on when the second light is switched off and the second lighting unit is configured to be switched on when the first light is switched off.