Abstract: The basic equation of market price of option is formulated by taking assumptions based on the characteristics of option and similar method for formulating basic equations in solid mechanics: h_v>0(t)=m₁v₀^-1(t)-n₁ v₀(t)+F,where h,m₁,n₁,F are constants.The main assumptions are:the ups and downs of market price v₀(t)are determined by supply and demand of the market;the factors,such as the strike price,tenor,volatility,etc.that affect on v₀(t)are demonstrated by using proportion or inverse proportion relation;opposite rules are used for purchasing and selling respectively.The solutions of the basic equation under various conditions are found and are compared with the solution v_f(t)of the basic equation of market price of futures.Furthermore the one-one corre-spondence between v_f and v₀(t)is proved by implicit function theorem,which forms the theoretic base for study of v_f affecting the market price of option v₀(t).