The invention discloses a method for constructing a solar cell array simulation system used for multi-satellite parallel test. The method comprises the following steps of: integrating a plurality of exactly the same solar cell arrays; distributing the plurality of the solar cell arrays in the system to a plurality of satellites by analyzing the power requirement of each satellite; and supplying power to each satellite. By dividing three-phase electric power into three-phase 220V power supplies by using a distribution box so as to supply power to the solar cell arrays in the system, the balance of the three-phase electric power is kept when supplying power, so that power supply safety is not affected by the electric utilization of equipment outside the system; an energy input conversion interface and an energy output conversion interface are arranged in the distribution box; the contact points of each of the interfaces are distributed conformably, so that system universality is enhanced. The solar cell arrays are connected in series through a GPIB and are communicated with a computer through a GPIB-to-USB or an LAN. The flexible application of universal equipment is realized by an adaptor cable so as to save test resource, cost and space effectively; parameter settings of each satellite and a corresponding solar cell array thereof are realized by the computer; and a configuration mode is flexible.