The invention provides a mould for moulding a concrete filled hollow thin wall component, which comprises templets (1), fasteners (2) and rotary components (3). The templets (1) are connected with each other by the rotary components (3); the connected templets (1) can turn relatively; after the templets are folded, the fasteners (2) fix the templets (1). The mould for moulding the concrete filled hollow thin wall component is characterized in that at least three templets in the mould are connected in turn side by side; at least one templet (1) is provided with at least one cross spacing mould (4) which is a movable spacing mould; the surface of the cross spacing mould is a moulding surface. In this way, after the fasteners become loose, the mould can be unloaded conveniently. When polyhedral components are produced, the mould can form concave structures on the polyhedral components, or be used for manufacturing connected or disconnected polyhedral components. Accordingly, the mould meets the requirements for producting various polyhedral components. In addition, the mould has the characteristics of simple structure, being manufactured easily, high strength, low cost and so on, which is applicable for manufacturing various open-end or closed-end polyhedral components.