The invention discloses a method for analyzing analog circuit fault propagation characteristics, comprising the following steps of: acquiring circuit response curve clusters under the condition that each analog circuit node is normal and circuit response curve clusters under the node fault state; dividing the fault mode according to the matched degree of the circuit response curve clusters under the node fault state and the circuit response curve clusters under the normal condition; constructing an analog circuit fault propagation network according to the fault mode; calculating the clustering coefficient C and average characteristic path length of the analog circuit fault propagation network; and calculating the degree distribution of the analog circuit fault propagation network and thenselecting measurable points according to the degree distribution. The invention carries out preference on the measurable points of a fault circuit according to the scale-free network characteristic and the non-uniformity characteristic which are showed by the circuit fault propagation characteristics, thereby further increasing the fault diagnosis efficiency and accuracy degree.