The invention relates to the field of failure analysis of electric power equipment and discloses a visualized analysis method for failure data of electric power transmission and transformation equipment. The visualized analysis method comprises the steps that the failure data of the electric power transmission and transformation equipment of an electric power system is collected; and the failure data is displayed by an R language analysis technology and a front-end display chart, so that visualized charts can be obtained. The visualized charts comprise a treeMap chart, a time sequence frequency chart or a variable correlation thermodynamic chart. The visualized analysis method has the advantages that comprehensive and multi-dimensional visualized data analysis is carried out to the failure data of the electric power transmission and transformation circuit equipment; different images and curves are obtained; and the overall failure data can be known visually and rapidly.