At present

the study of non-equilibrium plasma at atmospheric pressure and the source of it are limited to weak（electric field） ionization discharge area

there are low plasma concentrations and high energy consumption

large volume and other issues.Therefore

the research of non-uniform corona discharge characteristics and ion movement laws under the non-uniform electric field which to solve the above issues have become imperative.In this experiment

the self-made of line-point plasma generator as the research object

study its corona discharge characteristics and the laws of ion movement which under the non-uniform and strong electric field.Finally

its unique physical properties are obtained.The use of thin corona pole

makes it easier for the air ionization generating negative ions.Through data simulation

it is obtained that this line-point corona discharge space

the concentration of negative ions can reach 1014～1015/m3

and the higher the voltage

the more close to the corona zone

the greater the field strength

the higher the rate of ion transport

the greater the concentration of negative ions.This device can receive a higher concentration

more focus on access to charged particles compared to the wire-plate discharge device in the same location within the unit volume.