[6] studied and compared the maximum temperature, temperature difference, and pressure drop of a single S-channel cold plate and a double S-channel cold plate under different conditions. It was found that the maximum temperature of the double S-channel cold plate was close to the maximum temperature of the single S-channel cold plate. The temperature difference of the cold plate with a double S-channel is lower than that of the cold plate with a single S-channel. [PERSON] et al. [7] researched the cooling effects of microchannel cold plates, revealing that structural optimization, including adjustments to plate thickness, inlet and outlet width, and coolant mass flow rate, significantly impacts maximum temperature and temperature difference, and reduces system pressure drop and energy consumption. Multi-branch flow paths have become an important research area for cold plate cooling. [PERSON] et al. [8] designed a cooling plate with straight microchannels, and they mainly investigated the effects of the number of channels, flow direction, mass flow rate, and ambient temperature on the maximum temperature and temperature difference of the plate. [PERSON] et al. [9] further investigated the cooling performance of the microchannel cooling plate by considering the non-uniform distribution of the coolant. [PERSON] et al. [10] focused on multi-branch parallel fluid loop thermal control technology, widely used in manned spacecraft. A simulation model of six parallel fluid loops was established, deeply analyzing the effects of external heat flow, gravity field, and pipe resistance on flow distribution. The study found that changes in the working fluid's physical properties due to radiation significantly impacted flow distribution, with branch flow decreasing farther from the inlet and increasing closer to it. Multi-branch parallel cold plates are widely used in radar systems but still face many challenges. Flow distribution unevenness in multi-branch pipes results in non-uniform coolant distribution within the cold plate, causing inconsistent cooling capacity across the cold plate. For high-power radar cooling, traditional multi-branch parallel cold plates struggle to meet cooling demands in terms of temperature uniformity. At this stage, most researchers and scholars have studied the influence of different structures on the distribution of the single cold plate, but there is less research on the cold plate of the multi-branch pipe. Most scholars merely concentrate on the simplistic branch pipe model cold plates, such as the U-type and Z-type, among others. These cold plates can exert a certain function in the heat transfer of simple cold plates in practical engineering. Nevertheless, it is arduous for them to fulfill the demands of complex cold plate heat transfer and large-power heat sources. The novelty of this paper lies in the design of a 6 \(\times\) 5 multi-branch parallel cold plate model. It investigates the flow and heat transfer characteristics of the multi-branch cold plate and conducts a numerical simulation and analysis of its flow and heat transfer properties. This can furnish a theoretical foundation for the design and selection of cold plates in practical engineering. In this paper, the rational pipeline design and flow selection of the multi-branch system can effectively meet the cooling requirements of high-power equipment. Additionally, it optimizes the flow channel design of the cold plate to enhance the heat transfer uniformity of the cold plate.