This paper designs a power distribution control unit for airborne test systems based on solid-state power controller technology, tailored to meet the power distribution control requirements of complex airborne test systems. The unit features remote power monitoring and intelligent power distribution protection capabilities. The adoption of miniaturized and modular design ensures flexible expansion of the power distribution scheme. Each control unit is equipped with 9 SSPC channels, which can be independently connected to the circuit according to the testing requirements of the aircraft. Intelligent control and management, such as power protection and remote switching, are carried out by taking advantage of the programmable feature of SSPC. With theoretical demonstration and practical verification, this power distribution control unit can be applied to various airborne environments. The design can significantly enhance the efficiency and quality of flight testing work and is of great significance in increasing the fault tolerance, reducing errors, and improving maintenance efficiency.