A multifunctional anti-surge air valve set for a water pipeline or a container, comprising a individual mid-high rate (mid-size) air release/intake orifice controlled by a control isolating valve, a high-rate air intake orifice independently provided from said mid-high rate air release/intake orifice so as to allow individual design and selection for simultaneously satisfying different diameter and aeration rate requirements of mid-high rate air release and high-rate air intake, wherein said multifunctional anti-surge air valve set is characterized in that it comprises: a. a mid-high rate air release/intake valve which is positioned on a top portion of a negative pressure air intake valve, and is connected to said negative pressure air intake valve through the central guiding/aeration tube and said control isolating valve, wherein said mid-high rate air release/intake valve comprises a valve body, a valve cover, a first float ball and a mid-high rate air release/intake orifice, wherein when said water pipeline is being filled with water, said mid-high rate air release orifice provides an optimal, not too less or not too large, air discharge capacity and controls a rate of water filling in said water pipeline so as to allow optimal water filling speed in said water pipeline, wherein an engineer may select a suitable diameter of said mid-high rate air release/intake orifice; b. a negative pressure air intake valve which comprises a valve body, a valve cover and a high speed air intake orifice, an adjustment spring and an intake valve disc, wherein when a negative pressure is developed in said water pipeline, said negative pressure is arranged to drive said intake valve disc to move upwardly so as to cause said air intake orifice to open and allows air to rapidly enter said water pipeline through said air intake orifice for substantially relieving said negative pressure in said water pipeline, wherein said an engineer may select a suitable diameter of said high rate air intake orifice; and c. a small-amount air venting valve which is mounted on said top portion of said negative pressure air intake valve, and comprises a valve body, a valve cover, a second float ball, a lever assembly and a small-amount air venting orifice, wherein air in said water pipeline is allowed to be discharged out of said water pipeline through said small-amount air venting orifice. a. a mid-high rate air release/intake valve which is positioned on a top portion of a negative pressure air intake valve, and is connected to said negative pressure air intake valve through the central guiding/aeration tube and said control isolating valve, wherein said mid-high rate air release/intake valve comprises a valve body, a valve cover, a first float ball and a mid-high rate air release/intake orifice, wherein when said water pipeline is being filled with water, said mid-high rate air release orifice provides an optimal, not too less or not too large, air discharge capacity and controls a rate of water filling in said water pipeline so as to allow optimal water filling speed in said water pipeline, wherein an engineer may select a suitable diameter of said mid-high rate air release/intake orifice; b. a negative pressure air intake valve which comprises a valve body, a valve cover and a high speed air intake orifice, an adjustment spring and an intake valve disc, wherein when a negative pressure is developed in said water pipeline, said negative pressure is arranged to drive said intake valve disc to move upwardly so as to cause said air intake orifice to open and allows air to rapidly enter said water pipeline through said air intake orifice for substantially relieving said negative pressure in said water pipeline, wherein said an engineer may select a suitable diameter of said high rate air intake orifice; and c. a small-amount air venting valve which is mounted on said top portion of said negative pressure air intake valve, and comprises a valve body, a valve cover, a second float ball, a lever assembly and a small-amount air venting orifice, wherein air in said water pipeline is allowed to be discharged out of said water pipeline through said small-amount air venting orifice.