Now a day’s agriculture is the most important significant role in the society for the last few decades. Farmers mainly depend upon the agriculture for their daily lively hood. Main aim of this work is to measure the various parameters of agriculture are soil moisture, temperature, humidity and gas. This work proposes a Smart TMHG Measurement System, to measure the values of Temperature, Moisture, Humidity and Gas. Initially soil moisture sensor, humidity sensors, gas sensor and water pump which is connected to arduino. These measured values are displayed in Liquid Crystal Display (LCD). After detecting soil moisture and Humidity level, dc pump will be on or off based on the measured value. Arduino module control the ON or OFF the motor pump using an embedded c program. This information will be send to the user with the help of Wireless Sensor Network (WSN) for taking remedial action. Smart TMHG Measurement System will make farmers to increase the crop for better yield and make them economically benefit. Smart TMHG Measurement System used to measure the parameters of soil moisture, temperature, humidity and gas in remote location by using wireless sensor network which will help the community of farmer on service based, to reduce the cost, rather than the other sources.