The main aim of this paper is to identify the processes of reproduction of fixed assets of farms in Poland leading agricultural accountancy of the FADN system. The time range of the analysis refers to the period 2004-2011 and is based on a sample of farms engaged in agricultural accounting of the FADN system. In the analyzed period (2004-2011) narrow reproduction processes were dominant in the analyzed group of farms. In the period of economic recovery in agriculture studied farms actively reproducing the productive assets, then the greater their share reached extended reproduction. There are significant differences in the process of reproduction due to the production profile, and above all the economic size of surveyed farms. One has noticed that the farms specialized in milk production modernization processes ensure almost the whole examined period extended reproduction, there has been an increase in investment. On the other hand, in non-specialist units we had to deal with a clear decapitalization of assets. Tested farms of economic size of 50-500 thousand euro values of standard production usually recorded the extended reproduction, while those below 25 thousand narrow one.