A display substrate and a
display device, the display substrate comprising a display area (91) and a
peripheral area, the
peripheral area comprising a circuit area (92), the display area comprising: a plurality of sub-pixels (1), a plurality of
data lines (11) extending along a first direction (991), and a plurality of gate lines (12) extending along a second direction (992); the circuit area (92) comprising a plurality of driving unit groups, the circuit area (92) comprising a first sub-area (921) and a second sub-area (922) opposite on both sides of the display area (91) along the first direction (991), the first sub-area (921) comprising a plurality of
multiplexing unit groups, and the second sub-area (922) comprising a plurality of test unit groups, the driving unit (4) being configured to provide a driving
signal to the gate line (12), the
multiplexing unit (2) being configured to provide a
data signal to the data line (11), and the test unit (3) being configured to provide a test
signal to the data line (11); in the first sub-area (921), the driving unit groups and the
multiplexing unit groups are arranged alternately; and in the second sub-area (922), the driving unit groups and the test unit groups are arranged alternately.