The invention discloses a portable multifunctional signal measuring instrument for a digital broadcasting television. Various broadcasting television system measurement methods are integrated, the data analysis processing capacity is strong, the functional application is rich, and the requirement for convenience of outdoor work can be satisfied through low cost. The portable multifunctional signal measuring instrument for the digital broadcasting television comprises a smallest system module, a DVB signal input and demodulation module, a system power module, a man-machine interaction module, a CA card communication module and a network communication module, wherein the smallest system module is used for operating an Android operation system and comprises a CPU, an internal storage chip, an NAND FLASH and a hardware encryption IC, and the internal storage chip, the NAND FLASH and the hardware encryption IC are respectively connected with the CPU. The DVB signal input and demodulation module, the system power module, the man-machine interaction module, the CA card communication module and the network communication module are connected with the smallest system module, and the internal storage chip is a DDR3 chip or a DDR5 chip.