The invention discloses an experimental multifunctional negative-pressure powder material feeder, and belongs to the field of powder material feeding equipment. The experimental multifunctional negative-pressure powder material feeder is characterized in that a material conveying mechanism is mounted on a base (3) through a supporting mechanism, a feed port is formed in the upper portion of the material conveying mechanism, a discharge port in the lower portion of the material conveying mechanism is connected with a powder inlet end of a pneumatic conveyor through a pipeline, a high-pressure gas conveying mechanism is arranged on the upper portion of the pneumatic conveyor, and an intelligent control mechanism is connected with the high-pressure gas conveying mechanism through a data line (6). The intelligent control mechanism realizes intelligent control, various parameter values of gas conveyed by the high-pressure gas conveying mechanism are controlled and detected, the intelligent control mechanism transmits control instructions to the high-pressure gas conveying mechanism, the air volume and the air speed of the high-pressure gas are directly controlled, powder flow is indirectly controlled, feeding time can be set by the aid of the real-time monitoring function of the intelligent control mechanism, and feeding quality required by experiments is achieved.