Based on the interleaved staircase method, the psychophysical visual experiment is carried out to investigate the spatial and color directional characteristics of chromatic contrast sensitivity. For the spatial frequencies from 0.5 to 11.7 cycle /(°) under the viewing field of 6° and 10°, the chromatic contrast sensitivity which is defined as the reciprocal of the color-difference threshold is measured in 6 color directions in the iso-luminance plane of CIELAB color space at the two color centers of gray and red. The low-pass chromatic contrast sensitivity functions (CSF) of different color directions are compared, and the chromatic contrast threshold ellipses of different frequencies are fitted. With the increase of spatial frequency, the ellipse rotate with larger sizes and change ratio of semi-axis, which results in the change of chromatic contrast sensitivity with spatial frequencies and color directions, and implies the change of color appearance with the spatial frequencies. With the increase of viewing field, the ellipses′ peak azimuths and the fluctuation bands of semi-axis ratio shift to the lower frequencies, the tendency of which for red center is similar, but with lower values, to that of gray center under the same viewing field.