An HFC network fault locating method, comprising: obtaining a fault group in a hybrid fiber coaxial, HFC, network, wherein the fault group comprises at least one fault point; collecting a pre-equalization coefficient of at least one cable modem, CM, to obtain a first pre-equalization coefficient set, wherein the at least one CM is a CM whose pre-equalization coefficient changes after the fault group emerges; enabling a reference fault point that is corresponding to the fault group and whose location is known, wherein the reference fault point is an impedance mismatch point that changes the pre-equalization coefficient of the at least one CM; collecting the pre-equalization coefficient of the at least one CM again, to obtain a second pre-equalization coefficient set; calculating a relative distance between every two fault points in the fault group according to the first pre-equalization coefficient set, to obtain a first relative distance set; and calculating a relative distance between every two fault points in a fault point set according to the second pre-equalization coefficient set, to obtain a second relative distance set, wherein the fault point set comprises the fault group and the reference fault point; and determining a relative distance between each fault point and the reference fault point according to the first relative distance set and the second relative distance set, wherein a reflection loss of the reference fault point is known, and the method further comprises: calculating a fault severity between every two fault points according to the first pre-equalization coefficient set, to obtain a first fault severity set; and calculating a fault severity between every two fault points in the fault point set according to the second pre-equalization coefficient set, to obtain a second fault severity set; determining a fault severity between each fault point and the reference fault point according to the first fault severity set and the second fault severity set; and determining a reflection loss of each fault point according to the fault severity between each fault point and the reference fault point and the reflection loss of the reference fault point. obtaining a fault group in a hybrid fiber coaxial, HFC, network, wherein the fault group comprises at least one fault point; collecting a pre-equalization coefficient of at least one cable modem, CM, to obtain a first pre-equalization coefficient set, wherein the at least one CM is a CM whose pre-equalization coefficient changes after the fault group emerges; enabling a reference fault point that is corresponding to the fault group and whose location is known, wherein the reference fault point is an impedance mismatch point that changes the pre-equalization coefficient of the at least one CM; collecting the pre-equalization coefficient of the at least one CM again, to obtain a second pre-equalization coefficient set; calculating a relative distance between every two fault points in the fault group according to the first pre-equalization coefficient set, to obtain a first relative distance set; and calculating a relative distance between every two fault points in a fault point set according to the second pre-equalization coefficient set, to obtain a second relative distance set, wherein the fault point set comprises the fault group and the reference fault point; and determining a relative distance between each fault point and the reference fault point according to the first relative distance set and the second relative distance set, wherein a reflection loss of the reference fault point is known, and the method further comprises: calculating a fault severity between every two fault points according to the first pre-equalization coefficient set, to obtain a first fault severity set; and calculating a fault severity between every two fault points in the fault point set according to the second pre-equalization coefficient set, to obtain a second fault severity set; determining a fault severity between each fault point and the reference fault point according to the first fault severity set and the second fault severity set; and determining a reflection loss of each fault point according to the fault severity between each fault point and the reference fault point and the reflection loss of the reference fault point. calculating a fault severity between every two fault points according to the first pre-equalization coefficient set, to obtain a first fault severity set; and calculating a fault severity between every two fault points in the fault point set according to the second pre-equalization coefficient set, to obtain a second fault severity set; determining a fault severity between each fault point and the reference fault point according to the first fault severity set and the second fault severity set; and determining a reflection loss of each fault point according to the fault severity between each fault point and the reference fault point and the reflection loss of the reference fault point.