A method for producing an LED device 5 producing an LED device 5 by encapsulating an LED 4 by an encapsulating sheet 1 includes a sheet producing step of producing the encapsulating sheet 1 and an encapsulating step of encapsulating the LED 4 by the encapsulating sheet 1. Time T from producing the encapsulating sheet 1 in the sheet producing step to encapsulating the LED 4 by the encapsulating sheet 1 in the encapsulating step is 24 hours or less.
