The invention discloses a multifunctional pad and a processing method thereof. The pad is composed of multiple capillary tubes adhering together, and the two ends of each capillary tube are communicated with the outside. A coating can be arranged on the inner wall of each capillary tube, is made of titanium dioxide, silicon dioxide, essence, perfume, kieselguhr, activated carbon, pyrosulfurous acid and pyrosulfite or pypocholoride and is 0.1-300 micrometer thick. The capillary tubes can be arrayed vertically and horizontally, and parts of outer walls of the capillary tubes adhere together. The processing method of the pad includes the following steps that the outer wall of each capillary tube is coated with adhesive, and the pad is obtained through extrusion and curing forming. The multifunctional pad has the functions of ventilating, absorbing water, buffering, fresh keeping and specific gas releasing and can be applied to all the fields of home life, product package, air freshening and fruit and vegetable preservation, the processing method is simple, and the raw materials are easy to obtain.