The present invention relates to a light, in particular, to a light having a fly killing function that can be used for lighting and killing flies comprising at least one LED chip, a fly storage means, a negative pressure fan, a fan hanger, a ventilation net, a power supply; wherein the fly storage means is connected to the fan hanger, the LED chip is secured to an lower end of the fly storage means, the fly storage means comprises an air inlet and a fly storage groove, the negative pressure fan is mounted onto the fan hanger above the fly storage means, a gap is provided between the blades of the negative pressure fan and an upper end of the fly storage means to allow flies to go through; the ventilation net comprises a plurality of ventilation holes having a size that is able to stop flies from passing therethrough, and the ventilation net is provided circumferentially between the outside wall of the fan hanger and the outside wall of the fly storage means, and the fan hanger, the ventilation net and the fly
