The invention relates to a solar cell automatic grouping device. A control portion control a feeding region to convey a basket filled with silicon wafers to an unloading region; the unloading region unloads the silicon wafers in the basket and conveys the silicon wafers to a buffer region; the buffer region conveys the silicon wafers to a movable mechanism in a grouping region; a grouping mechanism transfers the silicon wafers to the feeding region, and the feeding region places the silicon wafers to the basket; and finally, the basket filled with the silicon wafers is conveyed out through theunloading region, and grouping can be achieved. Automatic grouping can effectively avoid pollution, broken and scratched wafers due to manual taking and testing; the solar cell automatic grouping device can greatly improve the test efficiency, can complete mass test comparisons, can improve the test precision, and can reduce errors.