The invention discloses a handheld device for data query configuration of an intelligent vehicle-mounted terminal and a data query configuration method realized by adopting the handheld device, belongs to the field of data query configuration of intelligent vehicle-mounted terminals, and aims to solve the problem that conventional data query configuration devices and methods of vehicle-mounted terminals are completed with match of computers, so as to lead mounting complexity. A command signal input end of an eight bit microprocessor is connected with a signal output end of a button module; a display signal input output end of the eight bit microprocessor is connected with a signal input output end of a liquid crystal display module; a data signal input output end of the eight bit microprocessor is connected with a data signal input output end of an RS232 data transmission agreement module; a system clock is used for providing a clock signal for the eight bit microprocessor; a power supply signal output end of a power supply is connected with a power supply signal input end of the eight bit microprocessor and a power supply signal input end of the liquid crystal display module simultaneously. The handheld device is specifically applied to a vehicle-mounted terminal.