Secure communication through chaos synchronization using small time co
ntinuous feedback is investigated. The factor K-r>2 for guaranteeing g
ood recovery of the information signal is determined. The simulation c
ircuit experiment is given by PSPICE circuit simulator. Theory and exp
eriment demonstrate that the secure communication by small time contin
uous feedback method does not require the system to be divided into su
bsystems, and has no limitation of signal to noise ratio.