Filariasis (elephantiasis) is an infectious disease caused by the filarial worm infections ,which live in the channels and lymph nodes. Filariasis causes an acute and chronicsymptoms and transmitted by various species of mosquitoes. Microfilariae live in theblood stream and lymph vessels and until now there has not been clear the source ofnutrients of microfilariae , whether from lymphatic fluid or red blood cells. The Researchwas conducted to determine the haemoglobin level in the population and whether itsrelated to filariasis in the village of Polewali, sub-district of Bambalamotu, district ofNorth Mamuju, West Sulawesi Province. This research used survey method with adescriptive approach, with 80 people participated on the research. Capillary bloodsamples were checked by microscopic method with Giemsa staining. Haemoglobin waschecked by using a hemoglobin meters (BeneCheck ®). Thick blood examination showedthat seven people (8.75%) were positive for microfilariae of Brugia malayi where six ofthem were males with an average hemoglobin 12.68 g/dL and one female with an averageof Haemoglobin of 12.7 g/dL. The results showed thad there was no difference in Hb levelsbetween people with positive and negative microfilariae. It can be concluded that therewas no difference in Hb between residents with microfilariae positive and negative , andno need for the addition of iron to patients with filariasis.