The invention belongs to the field of satellite navigation and particularly relates to a terminal positioning track fitting method based on a Bezier curve. The terminal positioning track fitting method comprises: step 1, a curvilinear function of a third-order Bezier curve is as follows: two adjacent sampling points Pn and P(n+1) serve as the starting point and the final point of the third-order Bezier curve, namely P0=Pn, and P3=P(n+1); step 2, P1 is enabled to be equal to a control point Pn' of the Bezier curve of the sampling point Pn; step 3, P2 is enabled to be equal to a control point P(n+1)' of the Bezier curve of the sampling point P(n+1); and step 4, the control point Pn' of the Bezier curve of the sampling point Pn, the sampling point P(n+1) and the sampling point Pn and the control point P(n+1)' of the Bezier curve of the sampling point P(n+1) are substituted into the third-order Bezier curve to obtain: B(t)=Pn(1-t)3+3Pn' t(1-t)2+3P(n+1)'t2(1-5)+Pn+1t3, t belongs to (0,1), and the fitted curve function of the actual track of the positioning terminal can be obtained, and the function is an interpolation function of the function; and step 5, the step1, step2, step3 and step 4 are repeated to calculate the fitted curve function of the next pair of adjacent sampling points until the final sampling point.