The invention discloses a manufacturing method for a porous volcanic aggregate concrete T-shaped beam and belongs to the technical field of T-shaped beam production. The method comprises the steps of preparation of concrete raw materials, pretreatment preparation of a porous volcanic aggregate, preparation of porous volcanic aggregate concrete, mounting of steel fittings and a formwork, binding of a beam body steel framework, mounting of reinforced nets, pouring of the porous volcanic aggregate concrete, vibratory compaction forming and curing of the concrete, tensioning, mud jacking and anchor sealing. The ratio of components of the porous volcanic aggregate concrete and technique parameters in the construction process are reasonably set, and the high-strength porous volcanic aggregate concrete T-shaped beam which can be used for tropical zones is prepared.