The invention discloses a financial business logic code implementation method separated from data logic. The method comprises the following steps: step S1, respectively realizing a BacktestPattern class, a Status class and a library class; wherein the BacktestPattern class is used for realizing the operation of data reading and conversion; and a layer of abstraction is additionally made to achievethe function of making deals, wherein the Status class is used for realizing the functions of market quotation callback, K line data callback reception, market transaction callback, order confirmation callback, order rejection callback, successful order withdrawal callback, order withdrawal rejection callback, complete order transaction callback, partial order transaction callback and heartbeat timing callback; wherein the library class is used for realizing a performance function required by historical data back testing, a main process control logic of back testing and an interface functionfor keeping back testing consistent with a real transaction; and step S2, in the implementation of the financial service logic code, interacting with functions in the BacktestPattern class and the Status class through functions provided in the Library class, so as to realize corresponding financial service functions.