The embodiment of the invention discloses a big data statistics method and system, a computer device and a storage medium. The method provided by the embodiment of the invention comprises the following steps: reading binlog of a Mysql database, and sequentially putting log records into a message queue; The message queue is consumed through an ETL service, log records in the message queue are extracted, cleaned, converted and loaded to obtain corresponding business data, and the business data are loaded to a corresponding data warehouse; carrying out real-time analysis, aggregation, query and offline calculation on the business data through a Spark distributed query engine to obtain a corresponding statistical result; According to the technical scheme, the data is imported into the warehouse in an incremental mode, the data are cleaned and stored after being cleaned, the statistical data are calculated in advance through offline calculation, the statistical data are directly taken out when the service system is used, the statistical speed is increased, and the statistical pressure of the database is reduced.