Abstract 
Family Planning is an activity to maintenance the interval pregnancy and determine the number of children in the family . One type of contraception is usually used is an injectable, either in the form of injections 1 month and 3 months . Purpose , knowing the difference sexual fulfillment in family planning acceptors injecting 1 month and 3 months . Methods , quantitative research with observational analytic study design with cross sectional approach . Data was collected through questionnaires . Number of samples 56 , with details of the 28 respondents using injectable contraceptives 1 month and 28 respondents using 3 -month injectable contraceptives . Selection of respondents with a simple random sampling technique. Analysis the data were processed with statistically using the Mann - Whitney test . Results , sexual activity  at acceptors with 1 month injectable in high classification is 13         ( 46.4 % ) , middle 8 ( 28.6 % ) and low 7 people ( 25.0 % ) while the 3 month injectable acceptors , height 5 people ( 17.9 % ) , middle 13 ( 46.4 % ) and low 10 ( 35.7 % ) . Conclusion : There are differences in sexual activity in family planning acceptors injecting 1 month and 3 months in the region Mranggen Primary Health Centers with p value < 0.05 . 
Keywords : Acceptor KB injecting 1 month , 3 -month injectable family planning acceptors

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