on the drill stem 4 for transmitting the pressure and or temperature values in addition the measuring unit may further comprises a power supply unit 18 configured to supply power to the electrical components in the measuring units and avoid wiring of a power cord on the drill stem 4 fig3 a and 3b are longitudinal and transverse axial sectional views of the throttling device in the measuring unit for kick information identification according to the embodiment of the present invention respectively as shown in fig3 a and 3b the throttling device 13 is mounted on the drill stem 4 and the throttling device 13 are foimed with three rock debris flow back holes 21 in an annulus formed between the drill stem 4 and the wellbore wall 22 to ensure normal flow back of rock debris in addition through the radii of different protrusion parts of the throttling device 13 e g radii r 1 r 3 shown in fig3 b the throttling device 13 can change the area of passage in the annulus so as to produce pressure drop by means of friction resistance and throttling preferably the throttling device 13 comprises a plurality of throttling parts and is a multi stage throttling device so as to produce enough.