Dual-sided LNG metering and loading skid is designed to simultaneously loading and unloading of tank trucks at two sides. The loading skid is characterized by high integration and small footprint, assisting user in saving plant area. In addition, the LNG metering and loading skid has special design of pipeline arrangement and high standard of producing and assembling to adapt to various loading and unloading operations. With two sets of pipelines instrument valves, electrical devices and control systems which are separately operated, the metering loading skid can implement one-side transferring operation or simultaneous transferring operation on both side without affecting each other.