Surface water high-fidelity ultra-deep sampling system and sampling method

The invention provides a surface water high-fidelity ultra-deep sampling system and a surface water high-fidelity ultra-deep sampling method. The surface water high-fidelity ultra-deep sampling systemcomprises a sampling platform, a near-liquid-level deep water sampling device, a quality stabilizer, a laminar flow sampler and a sampling bottle. The sampling platform floats on the surface water level and is used for placing a working part; the near-liquid-level deep water sampling device is used for sucking surface water deep below the liquid level; the quality stabilizer is used for stabilizing the collected water sample and redissolving volatile and semi-volatile substances separated out from the water sample; the laminar flow sampler is placed on the sampling platform, is connected to the water taking pipeline behind the mass stabilizer and is used for adjusting the water flow and the flow of the collected water sample and improving the fidelity of the sample; and the sampling bottle is used for collecting