A large population is a problem, the results of the population census show that the population in Indonesia reached 237.641.326 people with a Population Growth Rate of 1,49 percent. One of the efforts to implement the family planning program listed in the Medium-Term Development Plan is to increase the use of long-term contraceptive methods, one of which is the IUD. The use of IUDs at the Pantoloan Community Health Center was the lowest in 12 Community Health Center in Palu. From the data of the last 3 years, there have been fluctuations of 17 acceptors in 2013, 34 acceptors in 2014 and 30 acceptors in 2015. The purpose of this study is to determine the relationship between knowledge, attitudes, husband’s support and attitudes of health officers on the contraceptive selection of IUD by mothers who are the family planning acceptors in the Pantoloan Community Health Center. The type of this research was a quantitative study with a Cross-Sectional approach. The total population was 649 and the sample was 106 people. Sampling technique used was a proportional stratified random sampling. Statistical analysis was performed using Chi-Square test and the variable that had a relationship with the contraceptive selection of IUD was the knowledge (ρ = 0,038), maternal attitude (ρ = 0,015), husband’s support (ρ = 0,010). Whereas the attitude of health officers (ρ = 0.443) had no relationship with the contraceptive selection of IUD. It was expected that the health officers and health cadres conducted many counseling to increase the knowledge.