Nitrogen can show chirality when it is quaternary, otherwise you won't see chirality due to rapid inversion of the nitrogen lone pair.  In your case with an NH this will not be a chiral centre.

Thank you sir for your quick response. 

i have substance in its HCL salt form and -NH is connected with two different groups so is there any possibility of chirality?

Unfortunately not - in solution the proton is mobile so this won't happen.  On the HPLC timescale interchange is rapid and you will not see any chirality.

Ok sir, Thank you for your support.