During 2004-2007 years was investigated the nuptial compartiment problem of one Triturus cristatus population from Codri rezervation. In spring season (march – may) were examinated 22 Triturus cristatus conjugal couples. The realized investigations demonstrated that this species’nuptial behaviour consists of a stereotypical behavioural acts complex which includs four main phases: - males individual teritories occupation; - females enterance on male individual territories; - female courtation by the male and conjugal couple forming; - spawn fertilization and their fixation on submerged plants; In Triturus cristatus nuptial behaviour successful realization participate and those two typical senzory tubes – olfactory and optic; the first beeing responsable of sexual pheromone percetion and the second – of nuptial colouring and partner’s secondary sexual characters perception.