Abstract: With the combination of wireless network and Internet, mobile subscribers will certainly access Internet, so it is very necessary to simulate protocols in WAP. Based on the simulation to WTLS protocol in WAP, this paper evaluates WTLS protocol. We adopt the software OPNET to build network topology, node model, etc, and acquire the protocol's simulation performance results in moving subscriber numbers, moving subscribers' average session time, channel rates variety, etc. The important indexes include packet delay, response delay change quantities and response time. These performances will seriously affect real time response signal.