Based on the various senses of predications implied in the platonic texts, I attempt to shed light on the several types of predication and participation relations met in a number of selected Platonic dialogues and to construct conceptual maps including the main Platonic ideas interconnected in various modes. Various types of predication and participation (128 exemplary cases) are examined, such as the normal connective-is predication, Pauline predication, identity, difference, otherness and definition. Among them the cases of self-predication and self-participation are given special attention.