  GWAC will have been built an integrated FOV of 5,000 $degree^2$ and have
already built 1,800 square $degree^2$. The limit magnitude of a 10-second
exposure image in the moonless night is 16R. In each observation night, GWAC
produces about 0.7TB of raw data, and the data processing pipeline generates
millions of single frame alerts. We describe the GWAC Data Processing and
Management System (GPMS), including hardware architecture, database,
detection-filtering-validation of transient candidates, data archiving, and
user interfaces for the check of transient and the monitor of the system. GPMS
combines general technology and software in astronomy and computer field, and
use some advanced technologies such as deep learning. Practical results show
that GPMS can fully meet the scientific data processing requirement of GWAC. It
can online accomplish the detection, filtering and validation of millions of
transient candidates, and feedback the final results to the astronomer in
real-time. During the observation from October of 2018 to December of 2019, we
have already found 102 transients.
