Infancy is a golden period and a critical period of a person's development. Stimulation needs to improve developmental progress, or reduce delays. Touch stimulation For example with baby gymnastics is one of the methods of improving development. Development is the improved ability, skills, and functions of a more complex body in the ability of crude motor, fine motor, speech and language, as well as socialization and self-reliance that individuals have to adapt to Environment. The purpose of the study is to describe the implementation of baby gymnastics, describing the baby's development, knowing the baby's gymnastics relationship with the baby. Types of analytic research with cross sectional approaches. The research variables are the implementation of baby gymnastics and baby development. The study population is a mother of 53 people who visited Medan Krio village with an average of 30 visits per month. Sampling techniques using accindental sampling techniques. Number of samples as much as 53 respondents. Univariate analysis to find out the frequency distribution of each variable, while the Bivariation analysis using the variable Chi square test. Research results Anis as large as respondents performed baby gymnastics as much as 66.7%, most of the normal infant development is 70.8%. There is a connection between the implementation of baby gymnastics with the development of babies with a value of P value 0042 then the magnitude of contingency coefficient is 0308 (low). The research conclusion is there is a connection between the implementation of baby gymnastics with baby development.