The invention discloses a stringer type part R region fast filling device and method. The stringer type part R region fast filling device and method are suitable for filling of T-shaped, I-shaped andU-shaped stringer R regions. The device is composed of two parts including a bottom plate and a filling core die, wherein the bottom plate is used for containing the R region filling core die, and thefilling core die is used for containing a filler raw material. By the adoption of the device, filling work of a large number of R regions can be completed rapidly and accurately according to needed sizes. The device is easy to use, convenient to maintain and high in safety and reliability.