The invention discloses a pressure acquisition system and a method for a to-be-measured suction nozzle. The system comprises a carrier provided with at least one mounting position; a pressure sensor fixedly arranged on the bottom plate of the mounting position; a piece punching plate matched with the mounting position, movably arranged in the mounting position and in contact with the pressure sensor; and a data processing device electrically connected with the pressure sensor and used for collecting and processing the dynamic pressure data of the to-be-measured suction nozzle during the piece punching process of the piece punching plate. According to the invention, a special pressure acquisition system is arranged for to-be-measured suction nozzle. The dynamic pressure data of the to-be-measured suction nozzle during the piece punching process are collected. Meanwhile, the whole system is arranged in such a manner that the maximum pressure value of the to-be-measured suction nozzle on materials is more accurate during the piece punching process. The dynamic pressure data can be stored for an engineer to analyze, so that suction nozzles which do not meet the production process are eliminated. Therefore, the production yield is improved.