The invention relates to a sound-type wireless high voltage detection apparatus which is specifically used in the outdoor alternating current high voltage line maintenance field. The apparatus comprises a shell installed on a telegraph pole through a connection buckle, a circuit device, vertical cooling plates, a solar cell panel and an insulated moisture-proof sealing box. A vertical cooling channel is formed between the adjacent vertical cooling plates. The circuit device comprises a wireless control circuit, an auxiliary circuit and a detection circuit. In the apparatus of the invention, through the vertical cooling plates, the vertical cooling channel is formed, and a chimney effect is achieved, which is good for cooling, energy saving and environmental protection and maintenance of drying insulation of each component; through wireless remote control, work efficiency and a work comfort level are increased; safety and reliability are achieved and maintenance is convenient; the detection is convenient and intuitive; through a decoding decoder module, a circuit structure is simplified and intelligent control is realized; a nylon lining layer is used to carry out insulation and a metal outer wall is used to reduce electromagnetic pollution; and a wireless signal is used to realize long distance remote control.