The present invention relates to the field of electrical engineering technology and particularly relates to a transmission line mountain fire trip integrated test platform which comprises a wire-to-ground discharge test chamber, an insulator temperature rise performance trip test chamber and a wire-to-tower discharge test chamber. The wire-to-ground discharge test chamber and the insulator temperature rise performance trip test chamber are electrically connected to the wire-to-tower discharge test chamber through wires. An inner layer closed chamber door 1 is arranged between the wire-to-ground discharge test chamber and the insulator temperature rise performance trip test chamber. An inner layer closed chamber door 2 is arranged between the insulator temperature rise performance trip test chamber and the wire-to-tower discharge test chamber. The wire-to-ground discharge test chamber, the insulator temperature rise performance trip test chamber and the wire-to-tower discharge test chamber are provided with air inlets and air outlets. According to the transmission line mountain fire trip integrated test platform, the problem of a single line trip test platform form in an existing mountain fire condition is solved, and a lot of different types of data supports are provided for the research of a transmission line mountain fire trip mechanism.