Objective: To evaluate the effectiveness of telephone support of the reference midwife, in relation to the abandonment of breastfeeding of primiparous mothers and to identify, both the risk factors and the protective factors for the early abandonment of breastfeeding.

Material and Method Randomized parallel controlled clinical trial.

Sample: 220 primiparous mothers with access, during the 8 weeks postpartum, to a mobile phone to contact the midwife randomization of 110 mothers to the experimental group and 110 to the control group. The mothers of the experimental group will be offered the mobile phone number to contact their midwife after delivery. The mothers of the control group will receive the usual attention of the portfolio of services that includes the spontaneous visit in the center, the telephone call in the center, the home visit and the health education groups.

Inclusion Criteria:

• Primiparians who carry out the follow-up of pregnancy for the midwife
• The pregnant woman is of low risk
• Possibility of the mother to make calls to the mobile phone.
• The pregnant woman wishes to participate in the study.

Exclusion Criteria

• Maternal or fetal pathology that can condition maternal breastfeeding.
• idiomatic barrier.
• Prematurity.
• Baby with weight <2,500 gr. at birth
• Home delivery during the puerperium