Abstract: The computer program we provid in this article is used for data treatment in conductomctric titration analysis. It is written in BASIC language and has been passed in LASER 310 type personal computer for all kinds of examples we choose. This program can be used widely in different conditions. After the data of a test enters, all the things such, as calculating of values, searching a abruption, printing the results and drawing the curves can be done automatically and continuously in a few minutes. The start and end of the abruptions in titrative curves can be judged by comparing the critical value with the absolute value of second order difference quotient. Thus the test points of the linner area can be chosen automatically. The perfect counting system in the program is necessary for smooth operation.