Abstract: The 0-1 test is a new binary test approach for distinguishing chaotic dynamics， which applies directly to time series data. It was proved to be an effective test method after test for chaos of Chebyshev map. The 0-1 test was carried out on monthly precipitation time series tested to be stationary from 1958 to 2011 of 106 meteorologic stations in Northeast China. It is showed that monthly precipitation time series of all stations are chaotic， further more， the spatial interpolation of asymptotic growth rate K of mean square displacement with time shows significant spatial variability， that is， the whole study area can be divided into four sub-regions， eastern district with the highest K values， western and northern districts with the second high， south-central district with the lowest and a local area with relatively low K value in the northeastern of Inner Mongolia and northwestern Heilongjiang， which is in good agreement with the precipitation geographical distribution features and changes type of Northeast China. The results show that 0-1 test method has the characteristics to reflect the degree of chaos for data series.

Key words: 0-1 test, chaos identification, precipitation time series, subdivision, Northeast China