The invention belongs to the field of construction machine manufacturing, and relates to the field of rock anchor beam concrete pouring construction, in particular to a rock anchor beam concrete pouring device. The rock anchor beam concrete pouring device comprises a portal and a walking mechanism and is characterized in that the portal is of a multilayer frame structure, a top cross beam is arranged at the top of the portal, formwork connecting beams are fixed to the top cross beam, brackets and shaping formworks are arranged on the two sides of the upper layer of the portal, each shaping formwork is an integrated shaping formwork formed by connecting a side face formwork body, a corner formwork body and a bottom face formwork body, the tops of the forming formworks are hoisted on the formwork connecting beams, lateral supporting jacks are hinged between the brackets and the shaping formworks, and the shaping formworks are further connected with a hydraulic system. According to the rock anchor beam concrete pouring device, the integrated shaping formworks are adopted on the two sides of the trolley to replace traditional bulk formworks to control the rock anchor beam pouring outline, the formworks are positioned to the rock anchor beam position through the formwork connecting beams and the lateral supporting jacks after the trolley moves to a construction site, and efficient and safe anchor beam concrete construction is achieved.