The utility model discloses a new type muffle for an excavator, which comprises a shell, wherein the shell surrounds a muffling cylinder I, a muffling cylinder II and a muffling cylinder III, wherein the middle of the muffling cylinder II is divided into a front chamber and a rear chamber by a clapboard; the two chambers are further divided into upper and lower parts; the two chambers are communicated with each other by an inner intubation tube; the inner intubation tube is designed in a beveled edge form; the perforation percentage of the muffling cylinders I, II and III is within 8.9%-16.4%; and the perforation percentage is successively increased, namely the perforation percentage of the muffling cylinder III is larger than that of the rear chamber of the muffling cylinder II; the perforation percentage of the rear chamber of the muffling cylinder II is larger than that of the front chamber of the muffling cylinder II); and the perforation percentage of the front chamber of the muffling cylinder II is larger than that of the muffling cylinder I; the frequency range muffling performance can be improved by fully utilizing the sound regulation function of a perforating tube; and the inner intubation tube adopts a beveled edge design, thereby improving the distribution of the flow field and simultaneously achieving a certain muffling effect.