The invention provides a spray maintenance telescopic spray head. The spray maintenance telescopic spray head comprises a connecting pipe, the connecting pipe is connected with a water supply pipe, asliding body is slidably connected in the connecting pipe, under the action of water pressure, the sliding body partially extends out of the connecting pipe, under the action of no water pressure, thesliding body retracts in the connecting pipe, a water channel is arranged in the sliding body, a spray head device is rotatably connected to the tail end of the sliding body, the spray head device communicates with the water channel, and the spray head device swings left and right under the action of water pressure by taking a central shaft of the sliding body as a rotating shaft. According to the spray maintenance telescopic spray head, the technical effects that the site occupancy rate is greatly reduced, the construction difficulty and the construction cost are greatly reduced due to sitesaving, the telescopic swing spray head has no interference with formwork erecting and detaching of cast-in-place components, formwork erecting and detaching are conveniently and rapidly carried out,the construction efficiency is improved, the economic benefit is obvious, the spray area of the spray head is increased through the swing spray head, the spraying effect is better, the curing effect is improved, the strength of the components is guaranteed, and water resources are saved are achieved.