2.4GHz active rfid reader long range with Arduino Mega 2560

Do you have any sample arduino coding for serial read or any related to this RFID reader?

Sorry no.

Then i used HyperTerminal software

So what hardware did you use to get a connection between your reader and your PC?

i already tried serial read in Arduino, but i could not get any reading from arduino serial print.

So it sounds like your code was poor. You need to post it for more help.