The invention relates to a solid state disk write-in method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining a solid state disk write-in request, thesolid state disk write-in request comprising a write command; Monitoring and identifying the write command; Judging whether the write command contains a specific sequence or not; When the write command does not contain a specific sequence, writing corresponding data into an SLC Cache; And when the write command contains a specific sequence, forcibly writing corresponding data into a common area. According to the method, the command sequence is dynamically identified at the running moment of the system, and if certain characteristics are met, data are directly written into the TLC; Otherwise, maintaining the existing strategy, and selecting according to the SLC available space. Through the strategy, write amplification caused by SLC-to-TLC moving can be reduced, and then the service life ofthe SSD is prolonged.