To provide a small, cheap fluid flow control device with high flow accuracy and easy manufacturing method of the fluid flow control device eliminating leakage between each constituting member.

A plurality of passage members 16 with a comparatively long and narrow cross sectional passage hole 24 and a plurality of a wall patitioning members 20 which is each inserted between respective passage members 16 and is provided with a first communication hole 32 and a second communication hole 34 to be made to communicate with the ends of each passage member 16 are laminated and held between an entrance member 12 formed an entrance hole 22 and an exit member 14 formed with an exit hole 40. Fluid entered from the entrance hole 22 of the entrance member 12 is exhausted from the exit hole 40 of the exit member 14 through the passage hole 24 of each passage member 16, the first communication hole 32 and the second communication hole 34 of the wall partitioning member 20.