The invention is a rain-fall dust-
fall time-sharing multi-function automatic sampler, including the box, the collection cup, the
control circuit and the support. The said box is cylindrical; the top of the box has closed shelter, and closing to the shelter edge, embedded a cylinder-shaped collection mouth, and in the box side wall, there is a door which can open and close; in the center of the box, there is also a rotating tray driven by the driven
machine, and above the rotating tray, uniformly setting up many collection cup seat along the circumference, in the collection cup seat, placed the collection cup which can be taken out; and the said collection cup seat center
radius of rotation is the same as the collection mouth upper lid
radius atop the box. The invention uses
rain sensor to automatically continuous collect rain water during the rain. When closed the rain controller, it can automatically collect atmospheric samples for different time. The sampler can completely meet the monitoring needs of atmospheric, hydrological, meteorological departments.