A muffler for a compressor comprising: a case disposable in an inner space of the compressor, having an inlet and an outlet and including at least two or more chambers formed therein, wherein one of the at least two or more chambers has at least one communicating hole through which an inside and an outside of the case are communicated with each other, wherein the at least two or more chambers of the case comprise a first chamber communicated with the inlet, a second chamber communicated with the outlet, and a third chamber formed at an opposite side to the inlet based upon the second chamber; and a communicating pipe disposed between the inlet and the outlet inside the case and configured to guide a refrigerant introduced into the inlet toward the outlet, comprising: a flange portion configured to partition a noise space of the case; a first communicating portion formed through the flange portion to have a predetermined length and configured to communicate the first chamber with the second chamber; a second communicating portion formed through the flange portion at one side of the first communicating portion to have a predetermined length and configured to communicate the second chamber at an outlet side of the first communicating portion with the outlet of the case; a first communicating hole formed through the flange portion at one side of the first communicating portion and configured to communicate the first chamber with the third chamber; and a second communicating hole formed through a surface of the third chamber and configured to communicate the third chamber with the inner space of the compressor. a case disposable in an inner space of the compressor, having an inlet and an outlet and including at least two or more chambers formed therein, wherein one of the at least two or more chambers has at least one communicating hole through which an inside and an outside of the case are communicated with each other, wherein the at least two or more chambers of the case comprise a first chamber communicated with the inlet, a second chamber communicated with the outlet, and a third chamber formed at an opposite side to the inlet based upon the second chamber; and a communicating pipe disposed between the inlet and the outlet inside the case and configured to guide a refrigerant introduced into the inlet toward the outlet, comprising: a flange portion configured to partition a noise space of the case; a first communicating portion formed through the flange portion to have a predetermined length and configured to communicate the first chamber with the second chamber; a second communicating portion formed through the flange portion at one side of the first communicating portion to have a predetermined length and configured to communicate the second chamber at an outlet side of the first communicating portion with the outlet of the case; a first communicating hole formed through the flange portion at one side of the first communicating portion and configured to communicate the first chamber with the third chamber; and a second communicating hole formed through a surface of the third chamber and configured to communicate the third chamber with the inner space of the compressor. a flange portion configured to partition a noise space of the case; a first communicating portion formed through the flange portion to have a predetermined length and configured to communicate the first chamber with the second chamber; a second communicating portion formed through the flange portion at one side of the first communicating portion to have a predetermined length and configured to communicate the second chamber at an outlet side of the first communicating portion with the outlet of the case; a first communicating hole formed through the flange portion at one side of the first communicating portion and configured to communicate the first chamber with the third chamber; and a second communicating hole formed through a surface of the third chamber and configured to communicate the third chamber with the inner space of the compressor.