The invention relates to a test method suitable for multi-span transmission line ice-shedding fault research. The method comprises steps: 10, according to the prototype line structure parameters and the prototype line and model line material parameters and in combination of test site conditions, each similarity coefficient of a test model is determined through a similarity theory, wherein the prototype line structure parameters comprise a line model, a span, a height difference, sag, an ice thickness, an ice-shedding form and the like. The test method suitable for multi-span transmission lineice-shedding fault research has the beneficial effects that multiple parameters are adjustable, and the applicable research range is wide; breakthrough from nothing for the test research based on a scale model in the field is realized, and great promotion significance is realized for the related research; indoor construction can be realized, the mounting is convenient, the assembly is easy to process and prepare, and the practicality is strong.