The invention discloses a highway dangerous rock wireless monitoring and early-warning system, which comprises a plurality of low-power-consumption integrated wireless point type clinometers, a system main control device, a remote management center, a GPRS cloud server, a sound and light alarm system, an on-site RF wireless remote control transceiver, a lead-acid storage battery and a solar cell panel, wherein the remote management center is composed of a monitoring host and data management system and a GPRS DTU; and the sound and light alarm system is composed of a sound and light alarm warning billboard and text lamp light warning billboard. The highway dangerous rock wireless monitoring and early-warning system establishes a wireless sensing network and an on-site sound and light alarm control network based on a ZigBee wireless communication manager, forms a remote early-warning and remote control network based on GPRS, achieves on-site manual wireless control based on an RF wireless communication technology, is a system structural design based on three kinds of wireless communication technologies, provides the possibility of low power consumption of the on-site devices, and brings great convenience for on-site installation and deployment as well as manual operation of the devices.