The utility model discloses a spike agent multi point sampled pipe for nuclear air clean system, be provided with two at least thieff hatchs on the sampling pipe, does the opening direction of thieffhatch become 125 with the contained angle of the flow direction of treating sampling gas pulsation 145 the degree. The utility model discloses a trompil design of porous sampling pipe makes the thieff hatch can gather many sample application article on the cell cross section, improves the sample rate of accuracy, and a plurality of thieff hatchs are sampled simultaneously and are helped mixxingthe fluidic radial flow that waits to sample, can promote spike agent and fluid mixing.