The present invention relates to the analysis apparatus capable of collecting the body fluid such as urine or blood, for embodiment urination and measuring or calculating the specific constituent from the collected body urine, and the apparatus for collecting body fluid capable of using by connecting to the analysis apparatus and its related article, in which the apparatus for collecting and analyzing for the body fluid of a patient consists of the body fluid collecting part and the collecting part case, the apparatus for collecting body fluid consists of the body fluid collecting part, the total tube and adapter, the collecting part is constructed with the absorbing tube, the sensor tube, the cleansing tube and the passage and is attachable/detachable connected to the collecting part, a diaper and pants exclusive for a patient are provided as the related article such that it is convenient to possess and has effects in the urination having no relations to the intention of a patient or in case of unable to use hand or foot by the intention, moreover in using together with a diaper and in nursing acute and chronic patient.