The invention, which belongs to the technical field of the digital phase-shifted filter, discloses a C-band digital phase-shifted filter comprising an external paster digit phase shifter (DPS) module and an internal filter. An LTCC microwave module integrated with the filter and the digit phase shifter is realized. The C-band digital phase-shifted filter having advantages of easy debugging, light weight, small size, high reliability, good electrical performance, high temperature stability and batch consistency of electrical performances, low cost, and mass production and the like is suitable for any occasion and corresponding system that have strict requirements on the size, electrical performance, temperature stability, and reliability in fields of communication and satellite communication at corresponding microwave frequency bands.