The invention discloses a vector motion control method for a dual-engine dual-water-jet propulsion ship. A vector control handle is a combined single handle and has an X-axis, a Y-axis and a Z-axis. The vector control handle is directly manipulated to point to a moving target direction and send a control command to a control computer. The control computer solves the control command, and accordingto a solution result command, controls a left rudder, a right rudder, a left astern bucket, a right astern bucket, a left engine and a right engine to achieve synchronous and coordinated operations. The vector motion control method can adapt to the vector motion control requirement of a water jet propulsion device using two dump-bucket-type astern buckets and a dual-engine ship, can well adapt tothe motion control requirements of ships with different ship types, different water jet propulsion types and different engine types in engineering practice just by simply modifying the relevant control parameters of vector motion control.