A device for the analysis of urine designed to be connected in series to a catheter (12) of a patient's urine, comprises: means (14) for analyzing a sample of urine, means (13, 19) for feeding a pre-established quantity of urine coming from the catheter to said analysis means, and automatic control means (21) for controlling the feeding of the pre-established quantity of urine to the analysis means through said means for feeding, and for activating the analysis of the urine through said urine analysis means when the pre-established quantity of urine is supplied thereto.