The load cell is actually a kind of device which transforms the mass signal into measurable electrical signal output. The actual working environment of the sensor should be considered before using the sensor, which is very important for the correct selection of the weighing sensor. It is related to the normal operation of the sensor, its safety and service life, and even the reliability and safety of the whole weighing instrument. There are qualitative differences between the old and the new national standards in the basic concepts and evaluation methods of the main technical indicators of the load cell. There are mainly S-type, cantilever type, spoke type, plate ring type, membrane box type, bridge type, cylinder type and other types.