To ensure imaging quality, the optical and other subsystems of a large space camera need to be supported and fixed by using a structure with good mechanical property, low weight and small volume. The features of a hinge joint and a bolt-glue joint are analyzed and both joints are compared with each other in mechanical property. According to the performance of rod material and frame material used, the titanium alloy is selected as the material for joints. In view of the complexity of composite manufacturing processes and the high strength and stiffness requirements of bonding, a reasonable bonding process which can avoid and control the stress generated during bonding is established. Finally, the effectiveness of this joint design is verified in static and dynamic mechanical tests. The test results show that this bolt-glue joint design is an optimized and reasonable one.