The purpose of the present consulting services is to solve the above problems and to provide a novel functional modified polyester fiber yarn mixing and preparation processes. The present consulting services provides in one aspect a functional modified polyester fiber blending yarn, wherein the functional modified polyester fiber honeycomb porous structure. In addition, the functional polyester fiber carrier is modified by conventional cation-modified polyester available in 10 (TC less staining, 13 (TC~15 (TC heat setting. Preferably, the functional modified polyester fiber containing an antibacterial agent. The preferred antimicrobial agent is a compound said silver ion Mariana rice in the polyester fiber spinning even when added to antimicrobial agents, antibacterial effect achieved significant permanent antimicrobial fibers which antibacterial agent is added, with the following characteristics: a) when the antimicrobial agent is added directly inside the fiber spinning than antimicrobials for Cheese or fabric surface antibacterial, washability and durability greatly improved .b) with antibacterial agents in conventional polyester spinning and compared with other products, also has great technical advantages: an antibacterial agent is added when the conventional polyester spinning, most of which is inside the fiber cladding, and distributed in the fiber surface can play antibacterial powder only a small part, which limits the play antibacterial function. The honeycomb porous structure of the fiber, due to the porous inside and outside through the same surface area fibers is much greater, so that more fairly in fiber micro antibacterial powder pore surface, and therefore play a powerful antibacterial function. When the content of the same antibacterial powder, fiber honeycomb antibacterial function is much greater, and at the same antibacterial effect fiber honeycomb powder added in an amount to be significantly reduced, thereby reducing the cost of the antibacterial agent.