An LED lamp includes: a lamp shell including a lamp head, a lamp neck and a sleeve; a passive heat dissipating element having a heat sink connected to the lamp shell, the heat sink comprises fins and a base; a power source; a light emitting surface connected to the heat sink of the passive heat dissipating element and includes LED chip sets having LED chips; a first heat dissipating channel; a second heat dissipating channel; and a lamp cover connected with the heat sink and having a light output surface and an end surface, the end surface is formed with a vent to let air flow from outside of the LED lamp into both the first heat dissipating channel and the second heat dissipating channel through the vent. A distance is kept between distal ends of the fins and the sleeve, and air exists in the distance between the fins and the sleeve of the lamp shell.