The invention discloses a mine microseism and blasting signal identification method based on a waveform oscillation starting trend line slope. The method comprises the steps that first, a linear identification equation is acquired, and a linear identification equation Y = k1 + A*k2 + B is obtained based on N groups of microseism evens and N groups of blasting events, wherein k1 and k2 are used as the parameters of the linear identification equation; second, a discrimination threshold value Yf is calculated; third, an event to be identified is identified based on the linear identification equation and the discrimination threshold value Yf, the waveform oscillation starting trend line slope of the event to be identified is calculated to obtain the k1 and the k2, the k1 and the k2 are substituted into the identification equation to obtain a Y, if the Y is smaller than or equal to the discrimination threshold value Yf, the event to be identified is a microseism event, and otherwise the event to be identified is an blasting event. According to the mine microseism and blasting signal identification method based on the waveform oscillation starting trend line slope, calculated quantity is small, identification accuracy is high, conversion from a time domain to a frequency domain is of no need, cost is low, and implementation is easy.