The invention discloses a continuous reaction device and method for oxidative stabilization of coal pitch spheres. The continuous reaction device comprises a plurality of reaction chambers for oxidative stabilization reactions of coal pitch spheres from top to bottom, wherein the top of the uppermost reaction chamber is provided with a feed inlet; the bottom of the bottommost reaction chamber is provided with a discharge outlet; every two adjacent reaction chambers communicate with each other through a material sealing chamber; and each material sealing chamber is provided with a moving component used for controlling the falling speed of the coal pitch spheres so as to control the retention time of the coal pitch spheres in the reaction chambers. With such an arrangement manner, the continuous reaction device of the invention realizes the continuous operation of an oxidative stabilization process for coal pitch spheres and precisely controls the retention time of materials in differentstages of a reaction process; and cyclic temperature controlling and air supplying units can realize stepwise heating/constant-temperature air supply, so the coal pitch spheres and an air medium arein cross-flow contact, high mechanical efficiency and thermal efficiency are obtained, oxidation time is significantly shortened, the breakage rate of the coal pitch spheres is greatly reduced, and good energy saving effect is obtained.