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MBSE is an important paradigm for complex system design, especially for large-scale embedded system design. However, in the virtual validation phase of MBSE, there is still a lack of effective and flexible means for interconnecting communication among nodes" serial ports. To solve this problem, a serial port emulation method based on the Linux system kernel driver is proposed, and a communication technology based on emulated serial ports between multiple virtual devices is implemented. By analyzing the kernel driver architecture of standard serial ports and conducting standardized driver design, emulated serial ports are constructed to replace real hardware devices with emulated devices. The experimental results confirm the functional availability of the emulated serial port, with a maximum transmission rate of 456.98 Mbps on average, meeting the rate range requirements of physical serial ports. Using this emulated serial port, bidirectional serial communication experiments between virtual devices are performed, which can support the needs of emulating serial communication among embedded subsystems.