In this paper, we propose and study a light-emitting diode (LED) based on the surface-microcavity photonic crystal (PC). The beaming-collimation effect is generated by the coherent-coupling interaction of the emergent light from the multiple resonant cavities. As a result, the light extraction efficiency of LED is improved, as well as the spatial directivity of emergent light. By optimizing the structure of the surface PC LED, the light extraction efficiency of the surface-microcavity PC LED is 77.3% higher than that of the prefect PC LED, and 1.8 times higher than that of the normal slab LED. Simultaneously, the proposed surface-microcavity PC LED has more obvious far-field energy converging effect than prefect PC LED and normal slab LED. This feature ensures the emergent light with better spatial directivity.