The utility model relates to a water injection meter extraction tool which mainly solves the problems that replacement of an existing oil field water injection meter wastes time and labor, and the oil field water injection meter is required to be damaged sometimes. The water injection meter extraction tool is characterized in that a left clamping block (3) and a right clamping block (4) are connected to the interior of an outer sleeve (2) through T-shaped threads, the left clamping block (3) and the right clamping block (4) are both in semi-circle ring shapes, inwards-protruding clamping plates (6) are arranged in the circumferential direction of the bottom of the left clamping block (3) and in the circumferential direction of the bottom of the right clamping block (4), and a top plate of the left clamping block (3) is connected with a top plate of the right clamping block (4) through a threaded rod (5). The water injection meter extraction tool is simple in structure and convenient to use. When the water injection meter extraction tool is used for disassembling a water injection meter, the operation saves time and labor.