Abstract: A patient's skin puncturing device according to the present invention is built of a body (1) and of seated therein a pricking needle assembly (3) and of a push-button (5) arranged in the upper portion of the body (1). Between the push-button (5) and the pricking needle assembly (3) at least two driving springs (9) are arranged. The driving springs (9) are connected by upper ends with the push-button (5) provided with a pushing face (8). Between the body (1) and the pricking needle assembly (3) at least two return springs (30) are disposed, which are connected with the body (1). The pricking needle assembly (3) has a driving face (24) cooperating with the pushing face (8) of the push-button (5), and in the upper portion has wings (12) which upper surfaces cooperate with the driving springs (9) of the push-button (5) and which lower surfaces cooperate with the return springs (30), and has outer projections (17) cooperating with inner projections (18) with which the body (1) is provided.