The invention discloses an S-shaped valve pump with obliquely-arranged cylinder bodies. The S-shaped valve pump comprises a hopper, an elbow, a concrete cylinder and a delivery oil cylinder, wherein a slurry suction and discharge port is formed in the hopper, and the delivery oil cylinder is directly connected with the concrete cylinder. The concrete cylinder is connected with the slurry suction and discharge port through the elbow. The delivery oil cylinder and the concrete cylinder are obliquely arranged on the same straight line, and an inclination angle is formed between the straight line and the horizontal plane. The delivery oil cylinder and the concrete cylinder are obliquely arranged, so that the axial dimension of the S-shaped valve pump is greatly reduced, and accordingly the S-shaped valve pump can easily enter and come out of narrow corridors and aisles in building fields and small indoor spaces to work and has important application value. An overflow hole is formed in one side of the center line of the hopper, the retention position of an S-shaped valve during slurry suction and slurry discharge is asymmetrical about the center line of the hopper, and thus the size of the hopper can be further reduced.