The invention discloses a LabVIEW-based tubular workpiece measuring device, comprising an electrical cabinet and a mechanical operating table; a display and an NI case are arranged in the electrical cabinet, a processor, a digital I/O (input/output) card and a data acquisition card are arranged in the NI case, the digital I/O card is connected with a motor, electromagnetic valve and magnetic switch in the mechanical operating table, the electromagnetic valve and the magnetic switch are connected with a cylinder, and the data acquisition card is connected with inductance sensors and laser sensors distributed on the mechanical operating table; a LabVIEW-based tubular workpiece measuring method comprises the steps of starting, controlling the electromagnetic valve, controlling the cylinder to feed and retract, determining whether a measuring position is reached or not, triggering the magnetic switch, controlling the motor, collecting data, calculating size parameters, displaying data, storing the data, measuring to determine whether it is ended or not, controlling the electromagnetic valve, controlling the cylinder to feed or retract, determining an original position is reached or not, triggering the magnetic switch, and ending. Whether parameters of a tubular workpiece are satisfied or not can be judged according to standard values of the parameters.