Provided is a porous single resin fiber composite material comprising: first fibrous particles; second fibrous particles; and a binder for binding the first fibrous particles and the second fibrous particles, wherein the first fibrous particles and the second fibrous particles are bound by the binder so as to form an irregular reticulated structure including pores, the first fibrous particle is a polyester-based fiber including a first polyester-based resin, the second fibrous particle is a polyester-based fiber including a second polyester-based resin, the binder includes a third polyester-based resin, the first fibrous particle has an elongation rate higher than that of the second fibrous particle, and the melting point of the second polyester-based resin is higher than the melting point of the third polyester-based resin.
