Background: Digital nuclear signal filter shape is of great importance to the energy resolution and the counting rate in nuclear spectrometer system.Purpose: This paper attempts to achieve transfer function method and the synthesis forming filter shape based on LabVIEW.Methods: The digital nuclear signal which comes from the high speed ADC was formed a certain curvature of the concave and convex shaper in synthesis forming method

simply modify the forming parameters

the different shapes（trapezoid

triangle and gauss） were achieved by this method.Results: Finally

to validate the feasibility and practicability of the filtering methods

with the use of the modification of forming parameters on LabVIEW platform and the call of program in MATLAB

the transfer function and the synthesis forming method were used to complete filter shape.Conclusions: Based on the results

the filtering method can be used to provide technical support for the choices of filter shape schemes and parameters.