The invention discloses a wide-angle LED lamp. The wide-angle LED lamp comprises a lamp plate and a reflection cup, wherein both the inner surface of the reflection cup and the outer surface of the reflection cup can reflect light, the lower end of the reflection cup is arranged on the lamp plate, both the part, on the inner portion of the lower end of the reflection cup, of the lamp plate and the part, on the outer portion of the lower end of the reflection cup, of the lamp plate are provided with LED light sources. Due to the fact that the both the part, on the inner portion of the lower end of the reflection cup, of the lamp plate and the part, on the outer portion of the lower end of the reflection cup, of the lamp plate are provided with the LED light sources and the lamp plate is only one, on one hand, cost is guaranteed not to be increased and machining and assembling difficulty is also reduced, and on the other hand, heat dissipation paths of the wide-angle LED lamp are enough and a heat dissipation effect cannot be influenced. Light emitted by the LED light sources inside the reflection cup is reflected and refracted through the inner surface of the reflection cup, and therefore a light emitting angle is enlarged. Light emitted by the LED light sources outside the lower end of the reflection cup is reflected and refracted through the outer surface of the reflection cup so that the light emitting angle is further enlarged, and accordingly the wide-angle LED lamp is formed.