Smart Home & Security System Using Ethernet Shield

If have a person who can help me to make Smart Home & Security System Using Ethernet Shield.

it has been include this sensors
gas sensor,rain drop sensor, DHT11 & LM35 broth

This us too broad a question .

I suggest you start with your sensors and see if you can get data from them and print on your monitor, then go from there .
Run the Ethernet shield examples and understand how that works .
When you hit a specific problem then someone can help.

Perhaps good stuff for what you want achieve
NodeRed
OpenHab
Mqtt