Today, livestock industry grows faster and bigger. The number of livestock numbers per farm also grows rapidly. The bigger farms need more sophisticated control of livestock to prevent from all possible diseases, especially contagious diseases. In Korea, diseases cause serious economic loss of 2 trillion won every year, which is about 20% of the total production output. Researches on the wireless bio-signal monitoring technology for livestock are of great importance in the world. In this paper, as a way to predict the possible diseases, we propose a measurement method of the pulse of dairy cows for the continuous health monitoring. It is possible to measure a pulse from central artery and the left chest-wall of the cow. The pulse from central artery is measured by the sensor attached at the tail winding. The pulse at the left chest-wall can also be measured with our newly designed harness.