The contribution ratio to system-of-systems (CRSoS) of weapon equipment refers to the measurement of a single equipment contribution to the overall performance (such as capability or effectiveness) of system-of-systems (SoS), consistenting with the overall goal and rules of the SoS in a weapon equipment SoS or operation SoS. Firstly, a synthesized capabilityeffectiveness evaluation framework is proposed and a hierarchical evaluation methods of CRSoS is given based on the framework. Secondly, capacity/efficiency data of the simulation experiments is filled to requirements metrics matrix by a relationaloriented systems engineering method using quantitative quality function deployment matrix. Thirdly, a combination weights vector according to the sensitivity and fitness of the measurement on demand is proposed. Finally, technique for order preference by similarity to ideal solution is introduced to rank the SoS solutions. A joint fire mission using an unmanned swarm is introduced to illustrate the feasibility of this approach.