The invention discloses a low-voltage power line carrier communication noise suppression method suitable for an intelligent electric energy meter, which comprises the following steps: step 1, receiving a noise-containing signal s (n); 2, judging whether the noise-containing signal s (n) is interfered by random impulse noise, if so, turning to step 3, if not, turning to step 5; 3, obtaining randomimpulse noise estimation and reconstructing random impulse noise i (n); Step 4, subtracting the noise-containing signal s (n) from the reconstructed random impulse noise i (n) to obtain a signal s1 (n) without the random impulse noise; Step 5, judging whether the signal s1 (n) without random impulse noise has strong harmonic component, if so, turning to step 6, and if not, obtaining an output signal x (n) = s1 (n); Step 6, obtaining the estimation of the harmonic noise and reconstructing the harmonic noise f (n); Step 7, subtracting the signal s1 (n) from the reconstructed harmonic noise f (n)to obtain the denoised signal x (n), and inputting the denoised signal x (n). When it is applied, the influence of random impulse noise and harmonic noise on carrier signal can be effectively reduced, and the communication quality can be improved.