The aim was to outline the protocol of a randomized clinical trial (RCT) with the objective of identifying the effectiveness of the practice of Reiki in diabetic pregnant women. 150 pregnant women with diabetes were included and randomized into three groups: control/placebo group (mimicking of Reiki therapy), intervention (with face-to-face Reiki therapy technique) and remote intervention (with remote Reiki therapy) in the period of March from 2016 to December 2018. The intervention comprised seven Reiki sessions compared to the simulation of laying on of hands, in person or at a distance. Quality of life and anxiety will be measured, in addition to perinatal outcomes such as: gestational age at birth, Apgar score, birth weight, classification of gestational age at birth (term or preterm), classification of newborn weight by gestational age, type of care (joint accommodation, nursery and NICU) and perinatal death. Statistics will comprise a descriptive analysis with the calculation of mean and standard deviation for quantitative variables and frequencies and percentages for categorized variables. The literature has few works on Reiki in the area of obstetrics, highlighting the need to carry out studies that introduce integrative and complementary therapies in Brazilian public health.